A three dimensional cadmium coordination polymer: preparation, crystal structure, spectroscopic and thermal analyses of {[Cd(μ-C₄H₄O₆)(H₂O)3] ·2H₂O}_∞

Abstract

A three-dimensional coordination polymer, formulated as {[Cd(μ-C₄H₄O₆)(H₂O)₃] ·2H₂O}_∞ (1), has been synthesized and characterized by elemental and thermal analysis, IR spectroscopy, and X-ray diffraction studies. 1 crystallizes in the monoclinic space group, P2₁. The structure is self-assembled from polydentate tartrate and water molecules. Polymeric chains of 1 are composed of Cd(II) ions bridged by tartrate ions in a O,O’ fashion. The tartrate ion in 1 contributes to both covalent and hydrogen bonds. A wide range of hydrogen bonds is also present in the crystal structure. This arrangement leads to the formation of a 3D supramolecular structure.

Keywords:

• Cadmium complex
• coordination polymer
• crystal structure
• L-tatrtaric acid

Acknowledgments

This research was supported by Yazd Branch, Islamic Azad University, Yazd, Iran.