Crystal structure of lead(II) tartrate: a redetermination

Acta Crystallographica Section E: Crystallographic Communications

Weil, M.¹ 

[1] Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria

关键词: CRYSTAL STRUCTURE;    LEAD TARTRATE;    GEL GROWTH;    REDETERMINATION;    O-H...O HYDROGEN BONDS;   

DOI  :  10.1107/S2056989014027376

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

Single crystals of poly[μ4-tartrato-κ6O1,O3:O1′:O2,O4:O4′-lead], [Pb(C4H4O6)]n, were grown in a gel medium. In comparison with the previous structure determination of this compound from laboratory powder X-ray diffraction data [De Ridder et al. (2002). Acta Cryst. C58, m596–m598], the redetermination on the basis of single-crystal data reveals the absolute structure, all atoms with anisotropic displacement parameters and a much higher accuracy in terms of bond lengths and angles. It could be shown that a different space group or incorporation of water as reported for similarly gel-grown lead tartrate crystals is incorrect. In the structure, each Pb2+ cation is bonded to eight O atoms of five tartrate anions, while each tartrate anion links four Pb2+ cations. The resulting three-dimensional framework is stabilized by O—H⋯O hydrogen bonds between the OH groups of one tartrate anion and the carboxyl­ate O atoms of adjacent anions.

【 授权许可】

CC BY