Acta Cryst. (2005). E61, m2308-m2310  [ doi:10.1107/S1600536805032162 ]

Poly[sesqui(₄-biphenyl-4,4'-dicarboxylato-⁴O:O':O'':O''')(diethylformamide-O)gadolinium]

R. D. Poulsen, J. Overgaard, M.-A. Chevallier, H. F. Clausen and B. B. Iversen

Abstract: The crystal structure of the title compound, [Gd(C₁₄H₈O₄)_1.5(C₅H₁₁NO)]_n, comprises chains of Gd atoms intraconnected by the carboxylate groups of the biphenyl-4,4'-dicarboxylate (BPDC) linkers, one of which is disposed about a twofold axis. The Gd atom chains are aligned along the b axis and are interconnected by BPDC linkers, creating a three-dimensional framework. A single diethylformamide (DEF) molecule is bonded to each Gd atom. This molecule is positioned in the cavities formed by the interconnection of the Gd atom chains via the BPDC linkers. Due to the steric constraints of the carboxylate groups, the square antiprismatic coordination geometry of eight O atoms (one from the DEF molecule and seven from carboxylate groups) around Gd is distorted.

Online 15 October 2005

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