Coordination polymer of lanthanum: synthesis, properties and crystal structure of [La(4,4′-bipyridine)(CCl2HCOO)3(H2O)] n

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Abstract
A new mixed ligand complex of general formula [La(H2O)(4,4′-bpy)(CCl2HCOO)3] n has been synthesized and characterized by elemental and thermal analysis, IR spectroscopy and conductivity studies. The crystal and molecular structure was determined. The lanthanum atom is ten coordinate by four oxygen atoms from two chelating tridentate dichloroacetate substituents, two oxygen atoms from two bidentate bridging dichloroacetate groups, two oxygen atoms from two bridging tridentate dichloroacetate substituent, one oxygen atom of water molecule and one nitrogen atom from 4,4′-bipyridyl substituent. The coordination polyhedron of central atom can be described as tetradecahedron. The molecules are built up by O–H ··· N hydrogen bonds to a two-dimensional network.

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