Acta Cryst. (2007). E63, m2124-m2125  [ doi:10.1107/S1600536807032904 ]

Poly[[(₄-iminiodiacetato)bis(₃-iminodiacetato)lanthanum(III)nickel(II)] monohydrate]

X.-Y. Hu, Y.-P. Ren and S. W. Ng

Abstract: The Ni^II atom in the title compound, {[LaNi(C₄H₅NO₄)₂(C₄H₆NO₄)]·H₂O}_n is O,N,O'-chelated by two iminodiacetate dianions and it occupies a special position of site symmetry ; the [Ni(C₄H₅NO₄)₂] unit functions as a ₂-bridge that links the [La(C₄H₆NO₄)] units into a layer structure. The iminiodiacetate monoanion in the O,O'_carboxyl-chelated [La(C₄H₆NO₄)] unit lies about a special position of site symmetry 2; one of the two O atoms is also coordinated to another La atom. The rare-earth atom lies in a bicapped square-antiprismatic environment in the layer coordination polymer.

Online 13 July 2007

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