Acta Crystallographica Section E

Structure Reports Online

Volume 57, Part 9 (September 2001)

inorganic compounds


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Acta Cryst. (2001). E57, i82-i84    [ doi:10.1107/S1600536801013940 ]

PbGaBO4, an orthoborate with a new structure-type

H. Park and J. Barbier

Abstract: The crystal structure of a new ternary borate, lead gallium boron tetraoxide, PbGaBO4, has been determined by X-ray diffraction using a single-crystal grown from a PbO flux. The structure consists of infinite [010] chains of edge-sharing GaO6 octahedra bridged by BO3 triangles. The Pb2+ cations and their stereoactive lone pair occupy the apex of PbO4 square pyramids. The structure represents a new structure-type for anhydrous orthoborates. Bond-valence analysis reveals the presence of strain within the octahedral chains.

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