Acta Cryst. (2001). E57, m462-m464 [ doi:10.1107/S1600536801015021 ]
Abstract: The title compound, [Zn(C7H5O3)2(C10H14N2O)2(H2O)2], crystallizes as centrosymmetric mononuclear molecules with octahedrally coordinated zinc, all pairs of equivalent ligands being mutually trans. Intramolecular hydrogen bonding links each aqua ligand and the hydroxy group of a 2-hydroxybenzoate ligand with the uncoordinated carboxylate O atom of the same carboxylate ligand, lengthening this C-O bond so that it has almost the same length as that for the coordinated O atom. Intermolecular hydrogen bonding between aqua ligands and the carbonyl O atoms of N,N-diethylnicotinamide ligands link the molecules together into chains.
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