H2O4PRb
Rusakov, A.A.Kheiker, D.M.
Kristallografiya (1978) 23, 409-411
a=7.616Å b=7.616Å c=7.293Å
α=90° β=90° γ=90°
O5Ti3
Rusakov, A.A.Zhdanov, G.S.
Doklady Akademii Nauk SSSR (1951) 77, 411-414
a=3.747Å b=9.465Å c=9.715Å