Standard Molar Enthalpy of Formation of the Solid State Coordination Compound Cu(Nic)2·H2O(s) (Nic = nicotinic acid)

• Autorzy: Di Y. Y. , Yang W. W. , Wang Q. C. , Kong Y. X. , Tan Z. C.
• Języki publikacji: EN

Abstrakty

EN

A novel compound - monohydrated cupric nicotinate was synthesized by solid phase synthesis at room temperature. FTIR, chemical and elemental analyses, and X-ray powder diffraction technique were applied to characterize the structure and composition of the complex. Enthalpies of dissolution of {Cu(Ac)2 H2O(s)} and {HAc(l)} in 0.1 M HCl solution, {Nic(s)} in 0.1 M HCl solution containing certain amounts of monohydrated cupric acetate, and {Cu(Nic)2 H2O(s)} in 0.1 M HCl solution containing certain amounts of acetic acid at T = 298.15 K were determined by means of an isoperibol solution-reaction calorimeter: DsHCu(Ac) H O o2 2 = -(6.234 ± 0.187) kJ mol-1, DsHHAc o = -(1.788 ± 0.008) kJ mol-1, Ds HNico± = (10.337 ± 0.393) kJ mol-1, and DsHCu(Nic) H Oo2 2 = -(6.801 ± 0.130) kJ mol-1. In accordance with Hess law, a reasonable thermochemical cycle was designed, the enthalpy change of the solid phase reaction of monohydrated cupric acetate with nicotinic acid was determined to be DrHmo = (24.817 ± 0.818) kJ mol-1, and the standard molar enthalpy of formation of the title complex was found to be -(891.463 ± 2.139) kJ mol-1.

Słowa kluczowe

EN

Cu(Nic)2 H2O(s); room temperature solid phase synthesis; isoperibol solution-reaction calorimeter; enthalpy of dissolution; standard molar enthalpy of formation

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 3
• Strony: 485--491
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Di Y. Y.

autor

Yang W. W.

autor

Wang Q. C.

autor

Kong Y. X.

autor

Tan Z. C.

• College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, Shandong, P. R. China Fax: [phone],

Bibliografia

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