Structures by: Ravikumar K.

Total: 373

3-(2-chloroethyl)-2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin- 1-ium chloride

C11H16ClN2O,Cl

Krishnan RavikumarBalasubramanian Sridhar

Acta Crystallographica Section E (2006) 62, 9 o3730-o3731

a=6.609(5)Å   b=10.340(8)Å   c=18.473(14)Å

α=90.00°   β=90.00°   γ=90.00°

Dimethyl 4-{4-[2-(dimethylamino)ethoxy]phenyl}-2,6-dimethyl-1,4-dihydropyridine- 3,5-dicarboxylate

C21H28N2O5

Sundar, T. V.Parthasarathi, V.Priyanka JainBansal, RanjuRavikumar, K.

Acta Crystallographica Section E (2006) 62, 10 o4699-o4701

a=8.4072(5)Å   b=11.2593(7)Å   c=11.5788(7)Å

α=71.0360(10)°   β=86.8400(10)°   γ=84.2090(10)°

2-(2,6-diphenylpiperidine)ethan-1-ol

C19H23NO

D. GayathriD. VelmuruganK. RavikumarE. PoonguzhaliH. Surya Prakash Rao

Acta Crystallographica Section E (2006) 62, 12 o5390-o5392

a=11.7863(9)Å   b=12.2482(9)Å   c=12.8201(10)Å

α=95.0770(10)°   β=107.6370(10)°   γ=109.7680(10)°

4'-(4-Methoxyphenyl)-1'-methyl-5-diphenyl-5,6,7,8,9,10-hexahydro-1,3- cyclooctapyrimidino[2,3-b]thiazole-2-spiro-3'-pyrrolidine-2'-spiro-3''- 1H-indole-2'',3(2H,3''H)-dione

C36H36N4O3S

R. PrakashD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 1 o129-o131

a=11.4459(19)Å   b=12.085(2)Å   c=13.612(2)Å

α=69.568(3)°   β=65.586(3)°   γ=71.038(3)°

4'-(4-Methoxyphenyl)-1'-methyl-5-diphenyl-5,6,7,8,9,10-hexahydro-1,3- cycloheptapyrimidino[2,3-b]thiazole-2-spiro-3'-pyrrolidine-2'-spiro-3''- 1H-indole-2'',3(2H,3''H)-dione

C35H34N4O3S

D. GayathriD. VelmuruganK. RavikumarM. PoornachandranR. Raghunathan

Acta Crystallographica Section E (2007) 63, 1 o132-o134

a=11.4338(7)Å   b=11.9540(8)Å   c=13.5843(11)Å

α=70.300(2)°   β=65.1430(10)°   γ=72.1790(10)°

Methyl 1'-(2-hydroxy-1,3-dioxo-2,3-dihydro-1H-indan-2-yl)-2-oxo-5',6',7',7a'- tetrahydrospiro[1H-indole-3,3'(2H,2'H)-1'H-pyrrolizine]-1'-carboxylate

C25H22N2O6

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarE. Ramesh

Acta Crystallographica Section E (2007) 63, 3 o1492-o1494

a=8.6659(6)Å   b=8.6988(6)Å   c=14.5841(11)Å

α=84.3890(10)°   β=85.3730(10)°   γ=76.4020(10)°

(3Z)-2-Benzyl-3-benzylidene-6-phenyl-2-azabicyclo[2.2.2]octan-5-one

C27H25NO

B. SridharK. RavikumarM. MaheshV. V. Narayana Reddy

Acta Crystallographica Section E (2007) 63, 3 o1500-o1501

a=9.5155(7)Å   b=17.6544(13)Å   c=12.4242(9)Å

α=90.00°   β=97.4640(10)°   γ=90.00°

C15H7BrCl3FO

C15H7BrCl3FO

V. DhanasekaranD. GayathriD. VelmuruganK. RavikumarM. S. Karthikeyan

Acta Crystallographica Section E (2007) 63, 5 o2060-o2061

a=14.3752(9)Å   b=11.3099(7)Å   c=37.302(2)Å

α=90.00°   β=90.00°   γ=90.00°

(3aR,6S,6aR)-6-Benzyl-1-(4-bromophenyl)-5-tosyl-cis- perhydropyrrolo[3,4-b]pyrrole

C26H27BrN2O2S

K. N. VennilaD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 5 o2228-o2229

a=20.9376(11)Å   b=10.5821(6)Å   c=11.0154(6)Å

α=90.00°   β=90.00°   γ=90.00°

2-Bromo-1-(2,4-dichloro-5-fluorophenyl)-3-phenylprop-2-en-1-one

C15H8BrCl2FO

V. DhanasekaranD. GayathriD. VelmuruganK. RavikumarM. S. Karthikeyan

Acta Crystallographica Section E (2007) 63, 5 o2309-o2310

a=6.5423(8)Å   b=14.3317(16)Å   c=7.8040(9)Å

α=90.00°   β=93.284(2)°   γ=90.00°

Ethyl 3-(2-chloro-5-methyl-3-pyridyl)-3-hydroxy-2-methylenepropanoate

C12H14ClNO3

G. Y. S. K. SwamyK. RavikumarP. NarenderV. Jayathirtha Rao

Acta Crystallographica Section E (2007) 63, 5 o2188-o2189

a=10.8209(5)Å   b=10.4195(5)Å   c=11.2937(5)Å

α=90.00°   β=97.8450(10)°   γ=90.00°

1-{2-[(4-Nitrobenzylidene)amino]phenyl}-3-phenylthiourea

C20H16N4O2S

D. GayathriD. VelmuruganK. RavikumarS. DevarajM. Kandaswamy

Acta Crystallographica Section E (2007) 63, 5 o2226-o2227

a=7.2705(6)Å   b=11.0178(9)Å   c=12.0137(9)Å

α=84.7760(10)°   β=85.6750(10)°   γ=75.4050(10)°

5-Benzylidene-1-phenyl-2'',3''-dihydropiperidine-3-spiro-2'-pyrrolizidine- 3'-spiro-3''-1H-indole-4,2''-dione

C32H31N3O2

V. Vinodh Kumar D. GayathriD. VelmuruganK. RavikumarGowri Sridhar

Acta Crystallographica Section E (2007) 63, 5 o2211-o2212

a=8.7120(4)Å   b=20.5711(10)Å   c=14.9467(7)Å

α=90.00°   β=99.3220(10)°   γ=90.00°

1,3,7-Trimethylxanthenium 2,4,6-trinitrophenolate

C8H11N4O2,C6H2N3O7

A. ChandramohanD. GayathriD. VelmuruganK. RavikumarM. A. Kandaswamy

Acta Crystallographica Section E (2007) 63, 5 o2495-o2496

a=8.2996(10)Å   b=9.0014(11)Å   c=23.210(3)Å

α=90.00°   β=91.474(2)°   γ=90.00°

3-[3-(4-Ethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl]-4-nitro-2,5- diphenylisoxazolidine

C32H28N4O4

D. GayathriD. VelmuruganK. RavikumarK. KarthikeyanP. T. Perumal

Acta Crystallographica Section E (2007) 63, 5 o2216-o2217

a=13.2463(7)Å   b=10.0112(6)Å   c=20.9518(12)Å

α=90.00°   β=101.6880(10)°   γ=90.00°

4-Nitro-2-[(phenylhydrazono)methyl]phenol

C13H11N3O3

D. GayathriD. VelmuruganK. RavikumarD. SaravanakumarM. Kandaswamy

Acta Crystallographica Section E (2007) 63, 5 o2224-o2225

a=12.8167(13)Å   b=8.2176(8)Å   c=12.5848(12)Å

α=90.00°   β=113.068(2)°   γ=90.00°

1-(Benzylideneacetyl)-2-phenyl-1,2,3,5,10,10a-hexahydro- 1<i>H</i>-pyrrolo[1,2-<i>b</i>]isoquinoline-3-spiro-3'(2'<i>H</i>)-1<i>H</i>- indol-3'-one

C34H28N2O2

D. GayathriR. M. SethukkarasiD. VelmuruganK. RavikumarG. Periyasami

Acta Crystallographica Section E (2007) 63, 8 o3490-o3490

a=19.301(4)Å   b=14.725(3)Å   c=18.583(4)Å

α=90.00°   β=90.00°   γ=90.00°

Tetraaqua(2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylato- κ^2^N^3^,O)cobalt(II) 2.5-hydrate

C5H10CoN2O8,2.5(H2O)

B. SridharK. Ravikumar

Acta Crystallographica Section E (2007) 63, 12 m2887-m2888

a=20.8700(19)Å   b=17.1153(16)Å   c=7.3375(7)Å

α=90.00°   β=90.00°   γ=90.00°

1-Vinyl-1H-indole-3-carbaldehyde

C11H9NO

Selvanayagam, S.Sridhar, B.Ravikumar, K.Kathiravan, S.Raghunathan, R.

Acta Crystallographica Section E (2008) 64, 6 o1163

a=8.3200(5)Å   b=8.1490(5)Å   c=13.1620(7)Å

α=90.00°   β=99.9520(10)°   γ=90.00°

Bis(<i>S</i>-benzylisothiouronium) tetrachloridozincate(II)

2(C8H11N2S),Cl4Zn2

Gayathri, D.Velmurugan, D.Hemalatha, P.Veeravazhuthi, V.Ravikumar, K.

Acta Crystallographica Section E (2008) 64, 6 m848-m849

a=15.2135(11)Å   b=6.4475(5)Å   c=23.9277(18)Å

α=90.00°   β=95.3680(10)°   γ=90.00°

1-[4-oxo-4-(2,4,6-trimethoxy&shy;phenyl)but-1-yl]pyrrolidinium hydrochloride

C17H26NO4,Cl

Krishnan RavikumarBalasubramanian Sridhar

Acta Crystallographica Section E (2006) 62, 11 o4832-o4834

a=7.0333(5)Å   b=29.534(2)Å   c=9.1257(6)Å

α=90.00°   β=104.7570(10)°   γ=90.00°

4'-(4-Chlorophenyl)-1'-methyl- indan-2-spiro-2'-pyrrolidine-3'-spiro-2''(1''H)-carbazole-1,3,3''(4''H)-trione

C30H23ClN2O3

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarG. Periyasami

Acta Crystallographica Section E (2006) 62, 11 o5075-o5077

a=10.2044(6)Å   b=11.5646(7)Å   c=11.8815(7)Å

α=64.8560(10)°   β=82.5990(10)°   γ=72.0730(10)°

Biphenyl

C19H17BrO6

S. ThenmozhiA. Subbiah PandiD. VelmuruganC. PrakashK. Ravikumar

Acta Crystallographica Section E (2007) 63, 9 o3763-o3763

a=7.0122(5)Å   b=8.9766(6)Å   c=15.3539(10)Å

α=75.073(10)°   β=89.510(10)°   γ=85.010(10)°

Cedrelone butyrolactone

C26H30O6

S. Soundarya DeviR. MalathiS. S. RajanK. Ravikumar

Acta Crystallographica Section E (2007) 63, 9 o3806-o3807

a=12.6858(9)Å   b=13.1117(9)Å   c=13.3530(10)Å

α=90.000°   β=90.000°   γ=90.000°

3-(4-Chlorophenyl)-7-methyl-4-(4-methylphenyl)-1-oxa-2,7- diazaspiro[4.5]dec-2-en-10-one

C21H21ClN2O2

D. GayathriD. VelmuruganR. Ranjith KumarS. PerumalK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o398-o398

a=11.4585(8)Å   b=16.1132(11)Å   c=10.1038(7)Å

α=90.00°   β=90.00°   γ=90.00°

3-[(E)-2,4-Dichlorobenzylidene]-1-methylpiperidin-4-one

C13H13Cl2NO

D. GayathriD. VelmuruganR. Ranjith KumarS. PerumalK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o520-o520

a=12.2013(9)Å   b=8.5901(6)Å   c=12.6391(9)Å

α=90.00°   β=92.9970(10)°   γ=90.00°

4'-Amino-2,2''-dioxo-2,2'',3,3''-tetrahydro-1H-indole-3-spiro-1'-cyclopent- 3'-ene-2'-spiro-3''-1H-indole-3',5',5'-tricarbonitrile dihydrate

C22H12N6O2,2(H2O)

D. GayathriD. VelmuruganG. ShanthiP. T. PerumalK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o501-o502

a=17.1850(16)Å   b=8.9849(9)Å   c=13.3275(13)Å

α=90.00°   β=90.00°   γ=90.00°

1'-Phenyl-6'-thiacycloheptane-1-spiro-2'-perhydropyrrolizine-3'-spiro-3''- indoline-2,2''-dione

C25H26N2O2S

S. SundaramoorthyD. GayathriD. VelmuruganM. PoornachandranK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o488-o488

a=8.9846(10)Å   b=10.3564(11)Å   c=12.8124(14)Å

α=80.147(2)°   β=71.012(2)°   γ=67.497(2)°

3-(4-Methoxyphenyl)-6-(phenylsulfonyl)perhydro-1,3- thiazolo[3',4':1,2]pyrrolo[4,5-c]pyrrole

C21H24N2O3S2

S. SundaramoorthyD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2008) 64, 2 o515-o515

a=14.5533(8)Å   b=8.3319(5)Å   c=16.8828(9)Å

α=90.00°   β=98.9230(10)°   γ=90.00°

3-(4-Methoxyphenyl)-1',6,6-trimethyl-4,5,6,7-tetrahydrospiro[1-benzofuran- 2,3'(3H,2'H)-1H-indole]-2',4-dione

C24H22ClNO3

D. GayathriD. VelmuruganK. RavikumarG. SavithaP. T. Perumal

Acta Crystallographica Section E (2007) 63, 2 o1034-o1036

a=13.9638(8)Å   b=13.8490(8)Å   c=22.1754(13)Å

α=90.00°   β=100.8510(10)°   γ=90.00°

Spiro[4.3']oxindole-spiro[5.2"]cyclooctanone-6-phenyl- thiapyrrolizidine

C26H28N2O2S

D. GayathriS. KalyaniD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 2 o852-o854

a=9.0901(6)Å   b=10.5013(7)Å   c=12.7508(8)Å

α=79.8650(10)°   β=71.5040(10)°   γ=68.5680(10)°

1-[5-(4-Fluorophenyl)-1,2-oxazol-3-ylmethyl]-2-nitroiminoimidazolidine

C13H12FN5O3

K. RavikumarB. SridharM. MaheshV. V. Narayana Reddy

Acta Crystallographica Section E (2006) 62, 9 o3850-o3851

a=7.8575(6)Å   b=15.6860(12)Å   c=11.4098(9)Å

α=90.00°   β=107.9450(10)°   γ=90.00°

1,8-Bis(3-formyl-2-oxido-5-methylbenzyl}-1,8-diaza-4,11-diazoniacyclotetradecane chloroform solvate

C28H40N4O4,CHCl3

D. GayathriD. VelmuruganK. RavikumarS. SreedaranV. Narayanan

Acta Crystallographica Section E (2006) 62, 9 o3714-o3715

a=11.1366(5)Å   b=11.2816(5)Å   c=14.2124(7)Å

α=69.5640(10)°   β=84.5590(10)°   γ=67.1100(10)°

2,6-Diphenyl-1-propylpiperidine

C20H25N

D. GayathriD. VelmuruganK. RavikumarE. PoonguzhaliH. Surya Prakash Rao

Acta Crystallographica Section E (2006) 62, 9 o4169-o4171

a=5.6325(4)Å   b=13.8274(11)Å   c=10.7341(8)Å

α=90.00°   β=99.1050(10)°   γ=90.00°

Lamotrigine dimethylformamide sesquisolvate

C9H7Cl2N5,1.5C3H7NO

Balasubramanian SridharKrishnan Ravikumar

Acta Crystallographica Section E (2006) 62, 10 o4752-o4754

a=10.4444(13)Å   b=10.9943(13)Å   c=16.976(2)Å

α=83.637(2)°   β=74.850(2)°   γ=70.582(2)°

Palonosetron hydrochloride

C19H25ON2,Cl

Krishnan RavikumarBalasubramanian Sridhar

Acta Crystallographica Section E (2007) 63, 3 o1404-o1406

a=7.4972(7)Å   b=9.0288(8)Å   c=25.045(2)Å

α=90.00°   β=90.00°   γ=90.00°

4-(2,4-Dichlorophenyl)-5-(N,N-diethylcarbamoyl)-6-methyl-3,4-dihydropyrimidine- 2(1H)-thione

C16H19Cl2N3OS

B. SridharK. RavikumarY. S. Sadanandam

Acta Crystallographica Section E (2007) 63, 4 o1772-o1773

a=11.7548(11)Å   b=14.4443(14)Å   c=20.946(2)Å

α=90.00°   β=90.00°   γ=90.00°

Rizatriptan benzoate

C15H20N5,C7H5O2

Krishnan RavikumarBalasubramanian SridharHarihara Krishnan

Acta Crystallographica Section E (2007) 63, 4 o1958-o1960

a=8.7405(6)Å   b=21.3242(15)Å   c=22.2434(16)Å

α=90.00°   β=90.00°   γ=90.00°

Zolmitriptan

C16H21N3O2

K. RavikumarB. SridharHarihara Krishnan

Acta Crystallographica Section E (2007) 63, 4 o1774-o1776

a=9.0643(7)Å   b=11.4220(9)Å   c=14.6320(12)Å

α=90.00°   β=90.00°   γ=90.00°

Zolmitriptan.chloroform

C16H21N3O2,CHCl3

B. SridharK. RavikumarHarihara Krishnan

Acta Crystallographica Section E (2007) 63, 4 o1961-o1962

a=7.9987(6)Å   b=12.8279(9)Å   c=20.2396(14)Å

α=90.00°   β=90.00°   γ=90.00°

6-ethyl-1-(p-flurophenyl)-5-benzene sulfonyloctahydro-cis-\ pyrrolo[3,4-b]pyrrole

C20H23FN2O2S

S. SundaramoorthyD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 5 o2057-o2059

a=7.8671(4)Å   b=13.6413(7)Å   c=17.4200(9)Å

α=90.00°   β=90.00°   γ=90.00°

2,3-Dibromo-3-(4-chlorophenyl)-1-(2,4-dichloro-5-fluorophenyl)propan-1-one

C15H8Br2Cl3FO

V. DhanasekaranD. GayathriD. VelmuruganK. RavikumarM. S. Karthikeyan

Acta Crystallographica Section E (2007) 63, 5 o2493-o2494

a=10.5292(10)Å   b=10.5897(10)Å   c=30.534(3)Å

α=90.00°   β=91.111(2)°   γ=90.00°

2-(Methoxycarbonyl)-3-phenylprop-2-enyl 3-hydroxynapthalene-2-carboxylate

C22H18O5

D. GayathriD. VelmuruganK. RavikumarY. ZulykamaP. T. Perumal

Acta Crystallographica Section E (2007) 63, 5 o2297-o2299

a=7.5053(7)Å   b=22.468(2)Å   c=10.7081(9)Å

α=90.00°   β=106.1010(10)°   γ=90.00°

3-(1,3-Benzodioxol-5-yl)-2-bromo-1-(2,4-dichloro-5-fluorophenyl)prop-2-en-1-one

C16H8BrCl2FO3

V. DhanasekaranD. GayathriD. VelmuruganK. RavikumarM. S. Karthikeyan

Acta Crystallographica Section E (2007) 63, 5 o2491-o2492

a=9.9442(6)Å   b=13.9545(9)Å   c=11.0593(7)Å

α=90.00°   β=91.1300(10)°   γ=90.00°

Ethyl 2-(1H-indol-3-yl)-5-[1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin-2-yl]- 4-nitro-3-(p-tolyl)pyrrolidine-2-carboxylate

C39H38N4O6

G. T. SruthiD. GayathriD. VelmuruganK. RavikumarN. Arumugam

Acta Crystallographica Section E (2007) 63, 5 o2221-o2223

a=11.2689(8)Å   b=35.612(2)Å   c=8.8848(6)Å

α=90.00°   β=99.7850(10)°   γ=90.00°

1'-Nitro-2'-(3-nitrophenyl)-2',3',5',6',7',7a'-hexahydroindan-2-spiro- 3'-1'H-pyrrolizine-1,3-dione

C21H17N3O6

C. RemyaD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 5 o2218-o2220

a=26.1766(15)Å   b=8.1726(5)Å   c=17.7838(10)Å

α=90.00°   β=90.00°   γ=90.00°

2-[2-(Methylamino)-3-nitro-4H-chromen-4-yl]phenyl acetate

C18H16N2O5

D. GayathriD. VelmuruganK. RavikumarK. GeethaH. Surya Prakash Rao

Acta Crystallographica Section E (2007) 63, 5 o2300-o2302

a=23.7412(13)Å   b=8.3846(5)Å   c=16.1457(9)Å

α=90.00°   β=96.4400(10)°   γ=90.00°

4'-(4-Chlorophenyl)-1'-methylcycloheptane-1-spiro-3'-pyrrolidine-2'-spiro- 2''-indan-2,1'',3''-trione

C25H24ClNO3

C. MamthaD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 5 o2230-o2232

a=9.3282(10)Å   b=19.025(2)Å   c=12.5249(14)Å

α=90.00°   β=105.101(2)°   γ=90.00°

2'-(2-Chlorophenyl)-1'-nitro-2',3',3a',4',5',6'-hexahydroindan-2-spiro- 3'-1'H-pyrrolizine-1,3-dione

C21H17ClN2O4

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2007) 63, 5 o2233-o2235

a=7.6022(5)Å   b=9.7346(7)Å   c=12.6386(9)Å

α=85.2960(10)°   β=84.2000(10)°   γ=86.5270(10)°

1'-Methyl-4'-phenyl-1H-indole-3-spiro-2'-pyrrolidine-3'-spiro-1''- cyclooctane-2(3H),2''-dione

C25H28N2O2

R. Ganesh KumarD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2006) 62, 11 o4821-o4823

a=6.3359(5)Å   b=17.3414(14)Å   c=18.4066(15)Å

α=90.00°   β=90.00°   γ=90.00°

2-[[2-Chloro-5-(4-methoxyphenyl)pyridin-3-yl](hydroxy)methyl]acrylonitrile

C16H13ClN2O2

G. Y. S. K. SwamyK. RavikumarP. NarenderV. Jayathirtha Rao

Acta Crystallographica Section E (2006) 62, 11 o5063-o5064

a=12.6478(11)Å   b=12.8564(11)Å   c=18.2165(15)Å

α=90.00°   β=90.00°   γ=90.00°

4'-(4-Chlorophenyl)-2'-[1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin- 2-yl]-1'-methyl-2-phenyl-spiro[1,3-oxazole-4(5H),3'-pyrrolidin]-5-one

C35H30ClN3O4

A. SubbiahpandiD. VelmuruganK. RavikumarN. ArumugamR. Raghunathan

Acta Crystallographica Section E (2006) 62, 9 o4166-o4168

a=10.0409(10)Å   b=13.2335(13)Å   c=13.4951(13)Å

α=117.751(2)°   β=94.976(2)°   γ=98.865(2)°

2-(tosylamino)butan-1-ol

C11H17NO3S

D. GayathriD. VelmuruganK. RavikumarM. PoornachandranR. Raghunathan

Acta Crystallographica Section E (2006) 62, 10 o4454-o4455

a=6.4659(4)Å   b=7.0150(5)Å   c=14.2483(9)Å

α=101.7200(10)°   β=97.9620(10)°   γ=99.0150(10)°

(2S)-2-Benzyl-1-[(4R)-4-benzyl-2,2-dimethyl-1,3-oxazolan-3-yl]pent-4-en-1-one

C24H29NO2

K. RavikumarB. SridharK. S. Kiran kumar ReddyG. SabithaJ. S. Yadav

Acta Crystallographica Section E (2006) 62, 10 o4755-o4757

a=10.0061(12)Å   b=11.5146(14)Å   c=18.602(2)Å

α=90.00°   β=90.00°   γ=90.00°

3'-Nitro-4'-phenylspiro[1H-indole-3,2'-pyrrolidin]-2-one

C18H17N3O3

S. SelvanayagamD. VelmuruganK. RavikumarM. PoornachandranR. Raghunathan

Acta Crystallographica Section E (2006) 62, 11 o5072-o5074

a=11.8937(13)Å   b=7.9224(9)Å   c=17.5571(19)Å

α=90.00°   β=97.299(2)°   γ=90.00°

6-methoxy-1,3-benzoxazolin-2(3H)-one

C8H7NO3

D. GayathriM. JeyamN. RaamanD. VelmuruganK. Ravikumar

Acta Crystallographica Section E (2006) 62, 12 o5950-o5952

a=12.4251(12)Å   b=3.9154(4)Å   c=16.0231(16)Å

α=90.00°   β=108.796(2)°   γ=90.00°

1'-Methyl-4'-phenylindan-2-spiro-2'-pyrrolidine-3'-spiro-1''-cyclooctane- 1,3,2''-trione

C26H27NO3

S. SelvanayagamM. N. DeviD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2006) 62, 12 o5551-o5553

a=14.3552(8)Å   b=9.9061(6)Å   c=15.9692(9)Å

α=90.00°   β=113.7000(10)°   γ=90.00°

1'-Methyl-3',5''-diphenyl-5'',6'',7'',8'',9'',10'',11''1H-indole-3-spiro- 2'-pyrrolidine-4'-spiro-2''-cycloocteno[1,2-d]thiazolo[3,2-a]pyrimidine- 2,3''-dione

C35H34N4O2S

S. SelvanayagamB. PriyalakshmiD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2006) 62, 12 o5554-o5556

a=10.6368(8)Å   b=12.1783(9)Å   c=13.1467(10)Å

α=95.2590(10)°   β=109.1330(10)°   γ=108.6040(10)°

1-N-methyl-spiro[2.3']oxindole-spiro[3.2'']-5''-phenyl- 5'',6'',7'',8'',9'',10''-hexahydrocyclohepteno[1,2-d]thiazolo[3,2-a]pyrimidin- 3''-one-4-(p-methyl)phenyl-pyrrolidine

C35H34N4O2S

D. GayathriD. VelmuruganK. RavikumarM. PoornachandranR. Raghunathan

Acta Crystallographica Section E (2006) 62, 12 o5658-o5660

a=11.3427(8)Å   b=12.0148(9)Å   c=13.0102(10)Å

α=95.6040(10)°   β=110.8870(10)°   γ=109.5670(10)°

3''-(4-Bromobenzylidene)-4'-(4-bromophenyl)-1'-methylindan-2-spiro- 2'-pyrrolidine-3'-spiro-1''-cyclohexane-1,3,2''-trione

C31H25Br2NO3

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarM. Poornachandran

Acta Crystallographica Section E (2006) 62, 12 o5388-o5389

a=14.3345(10)Å   b=13.0061(9)Å   c=14.2616(10)Å

α=90.00°   β=99.2230(10)°   γ=90.00°

1-N-methyl-spiro[2.3']oxindole-spiro[3.2'']-5''-phenyl- 5'',6'',7'',8'',9'',10'',11''-heptahydrocycloocteno[1,2-d]thiazolo[3,2-a] pyrimidin-3''-one-4-(p-methyl)phenyl-pyrrolidine

C36H36N4O2S

D. GayathriD. VelmuruganK. RavikumarM. PoornachandranR. Raghunathan

Acta Crystallographica Section E (2006) 62, 12 o5661-o5663

a=11.3531(8)Å   b=12.1973(9)Å   c=13.2117(9)Å

α=94.1810(10)°   β=111.6830(10)°   γ=111.3770(10)°

Ethyl 5-hydroxy-3-(3-methoxybenzoyl)-1',5-dimethyl-2'-oxo-4,5-dihydro-1'H- spiro[furan-2(3H),3'(2'H)-indole]-4-carboxylate

C24H25NO7

D. GayathriD. VelmuruganK. RavikumarG. SavithaP. T. Perumal

Acta Crystallographica Section E (2006) 62, 12 o5947-o5949

a=8.4860(12)Å   b=22.446(3)Å   c=11.5348(16)Å

α=90.00°   β=90.305(2)°   γ=90.00°

Voriconazole

C16H14F3N5O

K. RavikumarB. Sridhar K. Durga PrasadA. K. S. Bhujanga Rao

Acta Crystallographica Section E (2007) 63, 2 o565-o567

a=7.5332(19)Å   b=8.349(2)Å   c=12.989(3)Å

α=90.00°   β=100.062(4)°   γ=90.00°

2-(2-Hydroxy-5-methylbenzylideneammonio)benzoate

C15H13NO3

D. GayathriD. VelmuruganK. RavikumarS. DevarajM. Kandaswamy

Acta Crystallographica Section E (2007) 63, 2 o849-o851

a=22.5716(15)Å   b=7.1742(4)Å   c=15.4336(9)Å

α=90.00°   β=97.093(2)°   γ=90.00°

1'-Methylacenapthylene-1(2H)-spiro-2'-pyrrolidine-3'-spiro-2''(3''H)- carbazole-2,1''(4''H)-dione

C33H26N2O2

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarG. Periyasami

Acta Crystallographica Section E (2007) 63, 2 o843-o845

a=9.2279(6)Å   b=21.9358(13)Å   c=12.7618(8)Å

α=90.00°   β=103.1630(10)°   γ=90.00°

3-(3-Methoxybenzoyl)-1',6,6-trimethyl-4,5,6,7- tetrahydrospiro[benzo[b]furan-2(3H),3'(2'H)-1H-indole]-4,2'-dione

C26H25NO5

D. GayathriD. VelmuruganK. RavikumarG. SavithaP. T. Perumal

Acta Crystallographica Section E (2007) 63, 2 o846-o848

a=9.4557(8)Å   b=11.7500(10)Å   c=12.3946(10)Å

α=116.1680(10)°   β=93.0050(10)°   γ=111.9250(10)°

Methyl 6-chloro-5-[hydroxy(5-oxocyclopent-1-enyl)methyl]pyridine-2-carboxylate

C13H12ClNO4

G. Y. S. K. SwamyK. RavikumarP. NarenderV. Jayathirtha Rao

Acta Crystallographica Section E (2007) 63, 4 o1842-o1843

a=9.6954(6)Å   b=11.0961(6)Å   c=12.0810(7)Å

α=90.00°   β=105.6710(10)°   γ=90.00°

7-Allyl-1,3-dimethyl-2,4-dioxo-2,3,4,7-tetrahydro- 1<i>H</i>-pyrrolo[2,3-<i>d</i>]pyrimidine-6-carbaldehyde

C12H13N3O3

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarE. Ramesh

Acta Crystallographica Section E (2007) 63, 5 o2303-o2305

a=6.7065(4)Å   b=13.1295(9)Å   c=13.6977(9)Å

α=90.00°   β=99.6130(10)°   γ=90.00°

4-Methyl-2-[(4-nitrophenylimino)methyl]phenol

C14H12N2O3

D. GayathriD. VelmuruganK. RavikumarD. SaravanakumarM. Kandaswamy

Acta Crystallographica Section E (2007) 63, 5 o2324-o2326

a=28.698(2)Å   b=6.0051(5)Å   c=28.574(2)Å

α=90.00°   β=92.318(2)°   γ=90.00°

4'-Ferrocenyl-3'-(4-methoxybenzoyl)-1'-methylspiro[1H-indole-3(2H),2'- pyrrolidin]-2-one

C30H28FeN2O3

B. K. Satis KumarD. GayathriD. VelmuruganK. RavikumarA. R. Sureshbabu

Acta Crystallographica Section E (2007) 63, 5 m1287-m1289

a=9.4895(5)Å   b=11.4943(6)Å   c=12.3633(7)Å

α=86.9780(10)°   β=71.3020(10)°   γ=77.8220(10)°

Epoxyazadiradione

C28H34O6

R. MalathiS. S. RajanR. Mohan KumarS. NarasimhanK. Ravikumar

Acta Crystallographica Section E (2007) 63, 5 o2483-o2485

a=9.6532(7)Å   b=12.6550(9)Å   c=10.5710(8)Å

α=90.00°   β=105.0960(10)°   γ=90.00°

1-{2-[(Anthracen-10-yl)methyleneamino]phenyl}-3-phenylthiourea

C28H21N3S

D. GayathriD. VelmuruganK. RavikumarS. DevarajM. Kandaswamy

Acta Crystallographica Section E (2008) 64, 2 o408-o408

a=6.6148(6)Å   b=14.3154(12)Å   c=23.823(2)Å

α=74.0450(10)°   β=88.7050(10)°   γ=87.4210(10)°

R-2,c-6-Bis(4-fluorophenyl)-t-3,t-5-dimethylpiperidin-4-one

C19H19F2NO

D. GayathriD. VelmuruganG. AridossS. KabilanK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o429-o429

a=7.3830(6)Å   b=24.0102(19)Å   c=9.4278(7)Å

α=90.00°   β=101.7270(10)°   γ=90.00°

N-(1-Acetyl-r-7,c-9-diphenyl-4,8-dithia-1,2-diazaspiro[5.4]dec-2-en-3- yl)acetamide

C22H23N3O2S2

D. GayathriD. VelmuruganS. UmamatheswariS. KabilanK. Ravikumar

Acta Crystallographica Section E (2008) 64, 2 o494-o495

a=12.3310(7)Å   b=16.0218(9)Å   c=12.3852(7)Å

α=90.00°   β=116.7140(10)°   γ=90.00°

3-[(E)-4-Methoxybenzylidene]-1-methylpiperidin-4-one

C14H17NO2

Gayathri, D.Velmurugan, D.Kumar, R. RanjithPerumal, S.Ravikumar, K.

Acta Crystallographica Section E (2008) 64, 3 o552

a=7.5212(7)Å   b=12.4097(11)Å   c=13.5062(12)Å

α=90.00°   β=90.00°   γ=90.00°

Erlotinib hydrochloride

C22H24N3O4,Cl

Selvanayagam, S.Sridhar, B.Ravikumar, K.

Acta Crystallographica Section E (2008) 64, 5 o931

a=14.5351(15)Å   b=18.4863(19)Å   c=8.1222(8)Å

α=90.00°   β=102.966(2)°   γ=90.00°

Donepezilium oxalate trihydrate

C24H30NO3,C2HO4,3H2O

K. RavikumarB. SridharD. G. SatheA. V. NaiduK. D. Sawant

Acta Crystallographica Section C (2006) 62, 12 o681-o683

a=8.5002(5)Å   b=17.6318(10)Å   c=18.2158(10)Å

α=90.00°   β=97.7440(10)°   γ=90.00°

(2Z)-2-benzylidene-N,7-dimethyl-3-oxo-5-phenyl- 5H-1,3-thiazolo[3,2-a]pyrimidine-6(3H)-carboxamide

C22H19N3O2S

B. SridharK. RavikumarY. S. Sadanandam

Acta Crystallographica Section C (2006) 62, 12 o687-o690

a=9.5353(6)Å   b=10.2071(6)Å   c=20.7901(12)Å

α=79.1980(10)°   β=79.6450(10)°   γ=78.2570(10)°

(2Z)-2-benzylidene-N,7-dimethyl-3-oxo-5-phenyl- 5H-1,3-thiazolo[3,2-a]pyrimidine-6(3H)-carboxamide

C22H19N3O2S

B. SridharK. RavikumarY. S. Sadanandam

Acta Crystallographica Section C (2006) 62, 12 o687-o690

a=5.1109(9)Å   b=9.5564(16)Å   c=20.503(3)Å

α=97.594(3)°   β=93.371(3)°   γ=101.755(3)°

Lenalidomide

C13H13N3O3

Ravikumar, KrishnanSridhar, Balasubramanian

Acta Crystallographica Section C (2009) 65, 10 o502-o505

a=5.9983(5)Å   b=8.9198(8)Å   c=11.5785(10)Å

α=75.7110(10)°   β=84.6600(10)°   γ=86.0380(10)°

Lenalidomide hemihydrate

C13H13N3O3,0.5H2O

Ravikumar, KrishnanSridhar, Balasubramanian

Acta Crystallographica Section C (2009) 65, 10 o502-o505

a=8.4425(7)Å   b=22.2874(19)Å   c=13.6627(12)Å

α=90.00°   β=101.0690(10)°   γ=90.00°

1-[2-(2,6-Dimethylsulfanyl-9<i>H</i>-purin-9-yl)-2-methylidenepropyl]-4,6-bis(methylsulfanyl)-1<i>H</i>-pyrazolo[3,4-<i>d</i>]pyrimidine

C18H20N8S4

Avasthi, KamlakarShukla, LakshmiKant, RuchirRavikumar, Krishnan

Acta Crystallographica Section C (2014) 70, 6 555-561

a=9.285(4)Å   b=9.818(4)Å   c=13.400(6)Å

α=98.707(7)°   β=103.080(3)°   γ=109.593(4)°

7,7'-(2-Methylidenepropane-1,3-diyl)bis[3-methyl-2-methylsulfanyl-3<i>H</i>-pyrrolo[2,3-<i>d</i>]pyrimidin-4(7<i>H</i>)-one]

C20H22N6O2S2

Avasthi, KamlakarShukla, LakshmiKant, RuchirRavikumar, Krishnan

Acta Crystallographica Section C (2014) 70, 6 555-561

a=9.859(2)Å   b=13.979(4)Å   c=29.331(8)Å

α=90.00°   β=90.00°   γ=90.00°

7-[2-(4,6-Dimethylsulfanyl-1<i>H</i>-pyrazolo[3,4-<i>d</i>]pyrimidin-1-yl)-2-\ methylidenepropyl]-3-methyl-2-methylsulfanyl-3<i>H</i>-pyrrolo[2,3-<i>d</i>]\ pyrimidin-4(7<i>H</i>)-one

C19H21N7OS3

Avasthi, KamlakarShukla, LakshmiKant, RuchirRavikumar, Krishnan

Acta Crystallographica Section C (2014) 70, 6 555-561

a=9.5436(7)Å   b=11.5329(8)Å   c=21.0042(13)Å

α=90.00°   β=107.943(3)°   γ=90.00°

Methyl 2-{3-[(<i>tert</i>-butoxycarbonyl)amino]-1-methyl-2-oxoindolin-3-yl}-2-methoxy-2-phenylacetate

C24H28N2O6

Ravikumar, KrishnanSridhar, BalasubramanianNanubolu, Jagadeesh BabuRajasekaran, TamilselvanReddy, Basi Venkata Subba

Acta Crystallographica Section C (2015) 71, 4 322-329

a=16.7030(13)Å   b=8.0515(6)Å   c=17.0919(13)Å

α=90°   β=90°   γ=90°

Methyl 2-{3-[(<i>tert</i>-butoxycarbonyl)amino]-1-methyl-2-oxoindolin-3-yl}-2-[(4-methoxybenzyl)oxy]-2-phenylacetate

C31H34N2O7

Ravikumar, KrishnanSridhar, BalasubramanianNanubolu, Jagadeesh BabuRajasekaran, TamilselvanReddy, Basi Venkata Subba

Acta Crystallographica Section C (2015) 71, 4 322-329

a=13.9402(12)Å   b=16.5380(15)Å   c=14.3279(13)Å

α=90°   β=116.0420(10)°   γ=90°

Methyl 2-[(anthracen-9-yl)methoxy]-2-{3-[(<i>tert</i>-butoxycarbonyl)amino]-1-methyl-2-oxoindolin-3-yl}-2-phenylacetate

C38H36N2O6

Ravikumar, KrishnanSridhar, BalasubramanianNanubolu, Jagadeesh BabuRajasekaran, TamilselvanReddy, Basi Venkata Subba

Acta Crystallographica Section C (2015) 71, 4 322-329

a=18.2606(17)Å   b=9.8976(9)Å   c=18.5364(17)Å

α=90°   β=99.310(2)°   γ=90°

C31H41N1O4

C31H41N1O4

Sagar, M.B.Ravikumar, K.Rao, A.V.R.Reddy, M.M.Singh, A.K.

Acta Crystallographica Section C (1994) 50, 12 2089-2093

a=9.997(2)Å   b=12.780(2)Å   c=21.163(4)Å

α=90.°   β=90.°   γ=90.°

Bis(adeninium) phthalate phthalic acid 1.45-hydrate

2C5H6N5,C8H4O42,C8H6O4,1.45H2O

Sridhar, BalasubramanianRavikumar, Krishnan

Acta Crystallographica Section C (2007) 63, 4 o212-o214

a=7.0100(5)Å   b=33.052(2)Å   c=24.2496(17)Å

α=90.00°   β=90.00°   γ=90.00°

6,8-dinitro-2,4-dihydro-1<i>H</i>- benzo[<i>b</i>][1,2,4]triazolo[4,3-<i>d</i>][1,4]oxazin-1-one

C9H5N5O6

Ravikumar, KrishnanSridhar, BalasubramanianNanubolu, Jagadeesh BabuHariharakrishnan, VenkatasubramanianSingh, Awadesh Narain

Acta Crystallographica Section C (2012) 68, 8 o302-o307

a=6.6313(4)Å   b=18.5174(11)Å   c=8.3354(5)Å

α=90.00°   β=91.3520(10)°   γ=90.00°

Cytosine

C4H5N3O

Sridhar, BalasubramanianNanubolu, Jagadeesh BabuRavikumar, Krishnan

Acta Crystallographica Section C (2015) 71, 2

a=15.1040(10)Å   b=15.1212(10)Å   c=9.2948(6)Å

α=90°   β=90°   γ=90°

Teuctosin

C22H28O8

R.MalathiS.S.RajanS.ArvindG.N.KrishnakumariK.Ravikumar

Acta Crystallographica Section C (2003) 59, 9 o530-o532

a=7.7235(5)Å   b=19.0625(9)Å   c=13.8907(13)Å

α=90.00°   β=90.00°   γ=90.00°

Adeninium hemioxalate chloride

2(C5H7N52),C2O42,2(Cl)

Sridhar, BalasubramanianRavikumar, KrishnanVarghese, Babu

Acta Crystallographica Section C (2009) 65, 5 o202-o206

a=4.3758(4)Å   b=17.1354(15)Å   c=11.1188(10)Å

α=90.00°   β=96.558(2)°   γ=90.00°

Adeninium oxalate hemioxalic acid hydrate

C5H6N5,C2HO4,0.5C2H2O4,H2O

Sridhar, BalasubramanianRavikumar, KrishnanVarghese, Babu

Acta Crystallographica Section C (2009) 65, 5 o202-o206

a=3.6222(3)Å   b=28.131(3)Å   c=11.1101(10)Å

α=90.00°   β=98.696(2)°   γ=90.00°

Erlotinib hemioxalate

2(C22H24N3O4),C2O42

Sridhar, B.Ravikumar, K.Krishnan, HariharaSingh, A. N.

Acta Crystallographica Section C (2010) 66, 1 o33-o38

a=7.6285(8)Å   b=10.2252(10)Å   c=14.6525(14)Å

α=86.076(2)°   β=84.925(2)°   γ=70.559(2)°

Granisetron

C18H24N4O

Ravikumar, KrishnanSridhar, Balasubramanian

Acta Crystallographica Section C (2010) 66, 2 m35-m39

a=13.7930(12)Å   b=13.5544(12)Å   c=17.9574(16)Å

α=90.00°   β=90.00°   γ=90.00°

Erlotinib monohydrate

C22H23N3O4,H2O

Sridhar, B.Ravikumar, K.Krishnan, HariharaSingh, A. N.

Acta Crystallographica Section C (2010) 66, 1 o33-o38

a=9.0227(10)Å   b=10.4548(11)Å   c=13.2014(14)Å

α=98.705(2)°   β=108.738(2)°   γ=111.873(2)°

Erlotinib fumaric acid hemisolvate dihydrate

C22H23N3O4,0.5(C4H4O4),2(H2O)

Sridhar, B.Ravikumar, K.Krishnan, HariharaSingh, A. N.

Acta Crystallographica Section C (2010) 66, 1 o33-o38

a=7.967(2)Å   b=13.248(4)Å   c=13.745(4)Å

α=108.916(5)°   β=106.673(5)°   γ=101.909(5)°

Diaqua[1-methyl-<i>N</i>-(9-methyl-9-azoniabicyclo[3.3.1]nonan-7-yl)indazole- 3-carboxamide]cobalt(II) tetrachloride dodecahydrate

C36H54CoN8O44,4(Cl),12(H2O)

Ravikumar, KrishnanSridhar, Balasubramanian

Acta Crystallographica Section C (2010) 66, 2 m35-m39

a=9.6311(9)Å   b=9.9794(9)Å   c=16.0133(14)Å

α=92.6110(10)°   β=103.4490(10)°   γ=118.0370(10)°