Interaction of Zinc(II) tetra-tert-butyl-phthalocyaninate with organic ligands in solution
Tóm tắt
Calorimetric titration was used to obtain standard thermodynamic characteristics of zinc(II) tetratert -butyl-phthalocyaninate interaction with electron-donor ligands in benzene. The formation of molecular complexes of Zn(t-Bu)4Pc with ligands (hexamethylphosphoramide, pyridine, piperidine, and morpholine) was found to be greatly affected both by the electron-donor and polarization properties of the coordinated ligands, as well as by the solvation effect of a medium. It was shown that the formation of thermodynamically stable molecular complexes of zinc(II) tetra-tert -butyl-phthalocyaninate with the electron-donor solvents (with stability constant Ks> 104) favors the formation of α-polymorphic modification of a metal phthalocyaninate during its crystallization from a given solvent.
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