Acta Cryst. (2003). E59, m1010-m1012  [ doi:10.1107/S1600536803022153 ]

Poly[disodium bis(-malonato)zincate(II) dihydrate]

D.-D. Lin, L. Zhang and D.-J. Xu

Abstract: The title compound, {Na₂[Zn(C₃H₂O₄)₂]·2H₂O}_n, is a three-dimensional polymeric complex bridged by malonate dianions. The malonate ligand exhibits versatile coordination modes and links two Zn^II and four Na^I atoms. The Zn atom occupies a special position in an inversion centre and is chelated by two malonate ligands [Zn-O = 2.0230  (10) and 2.0875  (11)  Å]; two other malonates are involved in monodentate coordination of the Zn atom [Zn-O = 2.2789  (12)  Å], thus completing its octahedral coordination environment. The Na atom also has a distorted octahedral coordination, formed by four carboxylate O atoms of four malonate ligands [2.4328  (15)-2.5493  (13)  Å] and two water molecules [2.3749  (15) and 2.4144  (14)  Å].

Online 15 October 2003

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