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Issue 9, 1978
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Thermochemistry of dichlorobis(triphenylphosphine oxide)-zinc(II), -cadmium(II), and -mercury(II)

Abstract

The standard enthalpy change (ΔHR) for the reaction MCl2(s)+ 2PPh3O(s)[MCl2(PPh3O)2](s)(M = Zn, Cd, or Hg) has been determined by solution calorimetry as –51.1 ± 2.2 (Zn), –16.3 ± 0.5 (Cd), and –12.3 ± 0.6 kJ mol–1(Hg) respectively. From the standard enthalpies of formation (ΔHf) of the crystalline anhydrous metal chlorides and the ligand, the ΔHf values of the zinc, cadmium, and mercury adducts are –586.6 ± 50, –528.3 ± 50, and –357.7 ± 50 kJ mol–1. The standard enthalpy change due to the sublimation of ligand (-66.0 kJ mol–1) has also been determined. Since the adducts do not sublime, the possibility of evaluating the enthalpy of the metal–oxygen bonds is discussed.

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Article type: Paper
DOI: 10.1039/DT9780001102
J. Chem. Soc., Dalton Trans., 1978, 1102-1104

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    Thermochemistry of dichlorobis(triphenylphosphine oxide)-zinc(II), -cadmium(II), and -mercury(II)

    R. A. Jorge, C. Airoldi and A. P. Chagas, J. Chem. Soc., Dalton Trans., 1978, 1102
    DOI: 10.1039/DT9780001102

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