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oai:ojs.www.eurjchem.com:article/791 2013-09-30T04:22:07Z eurjchem:ART driver

Synthesis, characterization and thermochemistry of piperazine complexes of bivalent metal bromides Dunstan, Pedro Oliver Khan, Abdul Majeed Adducts Metal bromides Transition metals Coordinated bonds Enthalpies of solution Thermochemical parameters Complexes of bivalent metal bromides with piperazine were prepared in hot ethanol solution. They have the general formula: [MBr2(pipz)n], where M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II) or Zn(II); pipz = piperazine; n = 1 or 1.5. They were characterized by melting point measurements, elemental analysis, TG/DTG-DSC curves, IR and electronic spectroscopy. The enthalpies of solution of the complexes, salts and ligand were measured by thermo-chemical cycles and several thermochemical parameters were determined. The mean standard enthalpies of the metal-nitrogen coordinated bonds and the enthalpies of gaseous complex formation were also determined. Atlanta Publishing House LLC 2013-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/791 10.5155/eurjchem.4.3.250-254.791 European Journal of Chemistry; Vol. 4 No. 3 (2013): September 2013; 250-254 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/791/PDF