Bi3(PO4)O3, the Simplest Bismuth(III) Oxophosphate: Synthesis, IR Spectroscopy, Crystal Structure, and Structural Complexity

Sergey M Aksenov; Natalia A Yamnova; Elena Yu Borovikova; Anatoly S Volkov; Dmitry A Ksenofontov; Olga V Dimitrova; Olga A Gurbanova; Dina V Deyneko; Fabrice Dal Bo; Peter C Burns

doi:10.1021/acs.inorgchem.8b01195

Bi₃(PO₄)O₃, the Simplest Bismuth(III) Oxophosphate: Synthesis, IR Spectroscopy, Crystal Structure, and Structural Complexity

Inorg Chem. 2018 Jun 18;57(12):6799-6802. doi: 10.1021/acs.inorgchem.8b01195. Epub 2018 Jun 7.

Authors

Sergey M Aksenov, Natalia A Yamnova, Elena Yu Borovikova, Anatoly S Volkov, Dmitry A Ksenofontov, Olga V Dimitrova, Olga A Gurbanova, Dina V Deyneko, Fabrice Dal Bo, Peter C Burns

PMID: 29877690
DOI: 10.1021/acs.inorgchem.8b01195

Abstract

The bismuth(III) oxophosphate Bi₃(PO₄)O₃ was obtained by hydrothermal synthesis. The unit cell has a = 5.6840(6) Å, b = 7.0334(7) Å, c = 9.1578(9) Å, α = 78.958(2)°, β = 77.858(2)°, γ = 68.992(2)°, V = 331.41(6) Å³, space group P1̅, and Z = 2. The crystal chemical formula that reflects the presence of oxo-centered tetrahedra and triangles is ^2D[O^IIIO^IV₂Bi₃](PO₄). The crystal structure contains [O₃Bi₃]³⁺_∞∞-heteropolyhedral corrugated layers parallel to (001), which alternate along [001] with isolated (PO₄) tetrahedra. The structural complexity parameters are v = 22 atoms, I_G = 3.459 bits/atoms, and I_G,total = 76.107 bits/unit cell, and thus Bi₃(PO₄)O₃ is the simplest pure bismuth(III) oxophosphate.