Preparation, thermal decomposition, and crystal structure of Zn(II) 2-chlorobenzoate complex with nicotinamide

• Published in: Journal of coordination chemistry Vol. 63; no. 19; pp. 3348 - 3355
• Main Authors: Findoráková, L., Győryová, K., Melník, M., Koman, M., Nour El-Dien, Faten A.
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 10.10.2010; Taylor & Francis Ltd
• Subjects: Chemistry; Crystal structure; Decomposition; Mass spectrometry; Nicotinamide; Spectrum analysis; Thermal decomposition; X-ray structure; Zn(II) 2-chlorobenzoate
• ISSN: 0095-8972; 1029-0389
• DOI: 10.1080/00958972.2010.512083

A new Zn(II) 2-chlorobenzoate complex, [Zn(2-ClC 6 H 4 COO) 2 (nad) 2 ] (nad = nicotinamide), was synthesized and characterized by elemental analysis, infrared (IR) spectroscopy, mass spectrometry, thermal analysis, and X-ray structure determination. The mechanism of thermal decomposition of the complex was studied by TG/DTG, DTA, IR spectroscopy, and mass spectrometry. The thermal decomposition is characterized as a two-step process. Zinc oxide was found as the final product of the thermal decomposition performed up to 900°C. Mass spectrometry was used to determine the volatiles released during thermal decomposition. The IR spectrum indicates that carboxylate is coordinated to zinc in monodentate coordination. [Zn(2-ClC 6 H 4 COO) 2 (nad) 2 ] crystallizes in the monoclinic system, space group Pn, a = 10.376(2) Å, b = 10.100(1) Å, c = 12.604(1) Å, β = 100.79(1)°. The zinc is tetrahedrally coordinated by two nitrogens of nicotinamide and two oxygens of 2-chlorobenzoate.