Abstract
In the title compound, [Cd(C10H8O4)(H2O)2)] n , the CdII cation is coordinated in a distorted trigonal–prismatic fashion. 3-(4-Carboxyphenyl)propionate (cpp) ligands connect the CdII cations into zigzag [Cd(cpp)(H2O)2)] n coordination polymer chains, which are oriented parallel to [101]. The chains aggregate into supramolecular layers oriented parallel to (10\overline{1}) by means of O—H...O hydrogen bonding between bound water molecules and ligating cpp carboxylate O atoms. The layers stack in an ABAB pattern along [100] via other O—H...O hydrogen-bonding mechanisms also involving the bound water molecules. The crystal studied was an inversion twin.
Highlights
In the title compound, [Cd(C10H8O4)(H2O)2)]n, the CdII cation is coordinated in a distorted trigonal–prismatic fashion. 3-(4-Carboxyphenyl)propionate ligands connect the CdII cations into zigzag [Cd(cpp)(H2O)2)]n coordination polymer chains, which are oriented parallel to [101]
The chains aggregate into supramolecular layers oriented parallel to (101) by means of O—HÁ Á ÁO hydrogen bonding between bound water molecules and ligating cpp carboxylate O atoms
The layers stack in an ABAB pattern along [100] via other O—HÁ Á ÁO hydrogen-bonding mechanisms involving the bound water molecules
Summary
The title compound was isolated during an exploratory synthetic effort aiming to produce a cadmium coordination polymer containing both 3-(4-carboxyphenyl)propionate (cpp) and butane-(1,4-diyl)dinicotinamide (bbn) ligands. Ecules and ligating cpp carboxylate oxygen atoms (Fig. 3) The OÁ Á ÁO distance across these hydrogen bonds measure 2.67 (2) and 2.735 (18) A. The supramolecular layers in turn stack in an ABAB pattern along the a-axis direction (Fig. 4), mediated by O—HÁ Á ÁO hydrogen bonding between bound water molecules and other ligated cpp carboxylate oxygen atoms with a OÁ Á ÁO distance of 2.692 (16) A.
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