Seven-Coordinated Diaquasuccinatocadmium(II) Bidimensional Polymer: Crystal Structure and Vibrational and Thermal Behavior

• Published in: Journal of solid state chemistry Vol. 153; no. 1; pp. 1 - 8
• Main Authors: Brusau, E.V., Pedregosa, J.C., Narda, G.E., Echeverria, G., Punte, G.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.08.2000; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Crystalline state (including molecular motions in solids); Crystallographic aspects of phase transformations; pressure effects; Exact sciences and technology; Inorganic compounds; Metal complexes; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Raman spectra; Inorganic compounds; Transition element complexes; Cadmium complexes; Molecular structure; Phase transformations; Thermal decomposition; Crystallization; Organic ligand; XRD; Infrared spectra; Dehydration; Experimental study; Heat treatments; Thermal properties; Lamellar structure; Hydrogen bonds; Aqua complex; Vibrational modes; Carboxylates; Crystal structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1006/jssc.2000.8707

Diaquasuccinatocadmium(II) has been studied by single-crystal X-ray diffraction and FTIR and Raman spectroscopies at room temperature. The structure consists of seven-coordinated Cd atoms bridged by succinate ions to form two-dimensional polymers perpendicular to the b axis. Hydrogen bonds embracing one of the coordination water molecule and a carboxylate residue stabilize the three-dimensional structure. The spectroscopic data are consistent with the structural model. Thermal dehydration and decomposition processes have been also investigated using TG–DTA measurements, FTIR spectroscopy, and powder X-ray diffraction analysis. A phase transition of the amorphous anhydrous compound to a stable crystalline phase was observed at 262°C.