Acta Cryst. (2008). E64, m816  [ doi:10.1107/S1600536808014219 ]

catena-Poly[bis(-4-methylbenzoato-²O:O')heptakis(-4-methylbenzoato-³O,O':O)trisamarium(III)]

S. Feng

Abstract: The title samarium coordination polymer, [Sm₃(C₈H₇O₂)₉]_n, was obtained by the hydrothermal reaction of Sm(NO₃)₃ with 4-methylbenzoic acid in alkaline aqueous solution. In the asymmetric unit, there are three crystallographically independent Sm^III ions, two of which are eight-coordinate in a distorted square-antiprismatic environment, while the third is nine-coordinate in a distorted tricapped trigonal-prismatic coordination. The metal centres are coordinated and bridged by four tridentate, three bidentate and two monodentate methylbenzoate anions, forming polymeric chains running parallel to the b axis.

Online 17 May 2008

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