Abstract
In the structure of title compound, [Cs2(C7H5N2O4)2(H2O)2]n, the asymmetric unit contains two independent Cs atoms comprising different coordination polyhedra. One is nine-coordinate, the other seven-coordinate, both having irregular configurations. The CsO9 coordination polyhedron comprises O-atom donors from three bridging water molecules, one of which is doubly bridging, three from carboxylate groups, and three from nitro groups, of which two are bidentate chelate bridging. The CsO6N coordination polyhedron comprises the two bridging water molecules, one amine N-atom donor, one carboxylate O-atom donor and four O-atom donors from nitro groups (two from the chelate bridges). The extension of the dimeric unit gives a three-dimensional polymeric structure, which is stabilized by both intra- and intermolecular amine N—H⋯O and water O—H⋯O hydrogen bonds to carboxylate O-atom acceptors, as well as inter-ring π–π interactions [minimum ring centroid–centroid separation = 3.4172 (15) Å].
Highlights
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The extension of the dimeric unit gives a three-dimensional polymeric structure, which is stabilized by both intra- and intermolecular amine N—HÁ Á ÁO and water O—HÁ Á ÁO hydrogen bonds to carboxylate O-atom acceptors, as well as inter-ring – interactions [minimum ring centroid–centroid separation = 3.4172 (15) A ]
Summary
Acta Crystallographica Section E: Structure Reports Online is the IUCr’s highly popular open-access structural journal. It provides a simple and accessible publication mechanism for the growing number of inorganic, metal-organic and organic crystal structure determinations. The CsO9 coordination polyhedron comprises O-atom donors from three bridging water molecules, one of which is doubly bridging, three from carboxylate groups, and three from nitro groups, of which two are bidentate chelate bridging. The CsO6N coordination polyhedron comprises the two bridging water molecules, one amine N-atom donor, one carboxylate O-atom donor and four O-atom donors from nitro groups (two from the chelate bridges).
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