Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Thermochemistry Of Dichlorobis[n-(2-pyridyl)acetamide]-zinc(ii), -cadmium(ii), And -mercury(ii)|
|Abstract:||The standard enthalpy changes ΔHR ⊖ = -70.80 ± 0.60, -35.02 ± 0.72, and -22.90 ± 1.1 kJ mol-1 for M = Zn, Cd, and Hg respectively have been measured from the reaction MCl2(s) + 2pya(s) → [M(pya)2]Cl2(s) [pya = N-(2-pyridyl)acetamide], by using solution calorimetry. From these values, the standard enthalpy of formation of the ligand (ΔHf ⊖ = -149 ± 21 kJ mol-1) obtained via combustion calorimetry, and literature standard enthalpies of formation of the metal chlorides, the ΔHf ⊖ values have been determined as -785 ± 22, -724 ± 22, and 544 ± 23 kJ mol-1 for M = Zn, Cd, and Hg respectively. The standard enthalpy of sublimation of the ligand (103.8 kJ mol-1) has also been obtained. The standard enthalpies of the reactions MCl2(g) + 2pya(g) → [M(pya)2]Cl2(c) and MCl2(c) + 2pya(g) → [M(pya)2]Cl2(c) have been calculated.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.