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Poly[[μ-aqua-tetraaquabis(μ-2-hydroxy-4-oxocyclobut-1-ene-1,3-diolato)strontium] hemihydrate]. | LitMetric

In the title coordination polymer, {[Sr(C(4)HO(4))(2)(H(2)O)(5)]·0.5H(2)O}(n), the Sr(2+) ion is coordinated by three monodentate hydrogensquarate (hsq) anions and six aqua ligands in a distorted SrO(9) monocapped square-anti-prismatic geometry. The hsq anions and water mol-ecules bridge the metal ions into infinite sheets lying parallel to (100). The O atom of the uncoordinated water mol-ecule lies on a crystallographic twofold axis. The packing is stabilized by numerous O-H⋯O hydrogen bonds.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3212191PMC
http://dx.doi.org/10.1107/S1600536811028704DOI Listing

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