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Herington, E.F. (1991) Recommended Reference Materials for the Realization of Physicochemical Properties (Recommendation Approved 1974). Pure and Applied Chemistry, 24, 261-289.

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• TITLE: Thermochemical Parameters of Tetramethylthiourea Adducts of Certain Metal(II) Bromides

  AUTHORS: Pedro Oliver Dunstan

  KEYWORDS: Enthalpies of Formation, Thermodynamic, Coordinated Bond Enthalpies, Solution Calorimetry, Dissolution Enthalpies, Tetramethylthiourea Adducts

  JOURNAL NAME: Open Journal of Physical Chemistry, Vol.5 No.1, February 13, 2015

  ABSTRACT: Complexes of the general formula [MBr2(TMTU)n] (where M is Mn, Fe, Co, Ni, Cu, Zn or Cd; TMTU is Tetramethylthiourea; n is 0.75, 2 or 3) were obtained by the reaction of salts and ligand in solution. The bromides were selected among several other salts because they had thermochemical data in the literature. Properties as capillary melting points; C, H, N, Br and metal contents; TG/DTG and DSC curves; and IR and electronic spectra were determined. The values of several thermodynamic parameters for the complexes were found by solution calorimetry. From them, the standard enthalpies of the metal-sulphur coordinated bonds were calculated. The standard enthalpies of the formation of the gaseous phase adducts also were estimated.