کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
216438 1426286 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermochemistry of the solid-state coordination compounds (C2H10N2)MCl4(s) (M = Cd and Cu)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Thermochemistry of the solid-state coordination compounds (C2H10N2)MCl4(s) (M = Cd and Cu)
چکیده انگلیسی

Tetrachlorocuprate (II) ethylenediammonium (C2H10N2)CuCl4(s) and tetrachlorocadmate (II) ethylenediammonium (C2H10N2)CdCl4(s) were synthesized. Chemical analysis, elemental analysis, and X-ray crystallography were applied to characterize the compositions and crystal structures of the two complexes. In accordance with Hess law, two thermochemical cycles were designed, and the enthalpy changes of the reactions of ethylenediamine dihydrochloride with CuCl2·2H2O(s) and CdCl2·2.5H2O(s) were determined as ΔrHm,1∘=(5.89±0.22)kJ·mol-1 and ΔrHm,2∘=-(2.88±0.26)kJ·mol-1 by use of an isoperibol solution–reaction calorimeter, respectively. The standard molar enthalpies of formation of the title complexes (C2H10N2)CuCl4(s) and (C2H10N2)CdCl4(s) were derived to be ΔfHm∘ [(C2H10N2)CuCl4, s] = −(784.51 ± 1.35) kJ · mol−1 and ΔfHm∘ [(C2H10N2)CdCl4, s] = −(960.99 ± 1.36) kJ · mol−1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 42, Issue 8, August 2010, Pages 978–983
نویسندگان
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