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Trends in Physical Chemistry   Volumes    Volume 16 
Metal-sulphur coordinate bond energies in thiourea complexes of certain metal(II) bromides
Pedro Oliver Dunstan
Pages: 25 - 35
Number of pages: 11
Trends in Physical Chemistry
Volume 16 

Copyright © 2016 Research Trends. All rights reserved

The interaction of metal bromides (MBr2) with thiourea (TU) in solution led to solid compounds. After chemical analyses these compounds could be formulated as [MBr2(TU)n], where M is Mn, Co, Ni, Cu, Zn or Cd and n is 2, 3, 4 or 6. Some of the properties of the solid compounds such as melting points were determined and chemical analyses for C, H, N, Br and the metals were performed. Thermogravimetric (TG) analyses and derivative thermogravimetric (DTG) analyses curves and differential scanning calorimetric curves (DSC) of the compounds were obtained. Infrared (IR) and electronic spectroscopic studies of the compounds were carried out. A calorimetric study of the complexes using solution calorimetry was done and thermochemical parameters were determined. Using these parameters the standard enthalpy of the metal-sulphur coordinate bonds were estimated. Also, the enthalpies of the complexes formed in the gaseous state were established.      
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