Abstract
A new complex, [Cu(BTZ)(DMF)Cl]2 [BTZ = 2-(2-hydroxyphenyl)benzothiazolate, DMF = N,N-dimethylformamide], was synthesized and characterized by X-ray crystallography, elemental analysis, IR spectrum, and TG−DTG. The results show that the complex crystallizes in a monoclinic space group P21/c; a = 10.478(3) Å, b = 8.993(3) Å, c = 18.482(6) Å; β = 105.697(5)°; V = 1676.59 Å3; and Z = 4. The structure of the complex is dimeric [Cu(BTZ)(DMF)Cl]2 with two isotropic Cu2+ ion centers having five-coordinate geometry. The constant-volume combustion energy of the complex, ΔcU, was determined as being (−17 689.56 ± 6.77) kJ·mol−1 by a precise rotating-bomb calorimeter (RBC-type II). The standard molar enthalpy of combustion, ΔcHmθ, and the standard molar enthalpy of formation, ΔfHmθ, were calculated at 298.15 K as being (−17 706.91 ± 6.77) kJ·mol−1 and (−738.67 ± 7.96) kJ·mol−1, respectively.
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