PoY
Prokin, E.S.Ershova, Z.V.Ermolaev, E.E.Chebotarev, N.T.
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy (1975) 11, 1230-1232
a=6.251Å b=6.251Å c=6.251Å
α=90° β=90° γ=90°
PoSc
Prokin, E.S.Ershova, Z.V.Ermolaev, E.E.
Radiokhimiya (1977) 19, 845-846
a=4.206Å b=4.206Å c=6.92Å
α=90° β=90° γ=120°