14977-07-2Relevant articles and documents
Complex formation of β-brominated tetraphenylporphyrins and metal exchange of their cadmium complexes with d-metal salts in dimethylformamide
Maltseva,Zvezdina,Chizhova,Mamardashvili, N. Zh.
, p. 102 - 109 (2016/03/12)
Complex formation of zinc and copper(II) acetates with tetraphenylporphyrin, 2-bromo-5,10,15,20-tetraphenylporphyrin, 2,3,12,13-tetrabromo-5,10,15,20-tetraphenylporphyrin, and 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrin in N,N-dimethylformamide has been studied. The rate constants determined in the study of the complex formation and the metal exchange reactions have been compared.
Specific features of the formation of zinc and cadmium complexes with tetraphenylporphine in amphiprotic media
Kononov,Trifonova,Aleksandriiskii,Burmistrov,Koifman
, p. 413 - 416 (2009/05/30)
The kinetics of the complex formation reactions of tetraphenylporphine with zinc and cadmium acetates in mixed solvents containing alcohols and inert diluents was studied by electronic absorption spectroscopy. The dependences of the rate constant on the b
Thermophysical and structural properties of crystalline solvates of tetraphenylporphyrin and their zinc, copper and cadmium metallo-complexes
Perlovich, German L.,Zielenkiewicz, Wojciech,Kaszkur, Zbigniew,Utzig, Eva,Golubchikov, Oleg A.
, p. 163 - 171 (2008/10/09)
The results of a thermochemical and structural investigation of the process of desolvation of crystalline solvates of tetraphenylporphyrin H2TPP with o-, m-xylene; zinc(II) tetraphenylporphyrin ZnTPP with benzene, toluene, o-, m-, p-xylene; cadmium(II) tetraphenylporphyrin CdTPP and copper(II) tetraphenylporphyrin CuTPP with o-, m-xylene are reported. Thermogravimetry and differential scanning calorimetry were used to determine the stoichiometry of crystalline solvates, the energy of activation and the heat effect of the desolvation process. The lattice parameters of the unsolvated crystalline CdTPP, ZnTPP and crystalline solvates of ZnTPP with p-xylene and CuTPP with m-xylene were determined using the X-ray powder diffraction method and the algorithm of Ito. The stoichiometry 1:1 for crystalline solvates [ZnTPP+(p-xylene)1] and [CuTPP+(m-xylene)1] was observed. The values of free volume per solvent molecules Vfree defined as the difference between volume of unit cell of crystalline solvate and the sum of the volume of a unit cell of unsolvated phase of an investigated compound and Van der Waals volume of solvent molecules were calculated. The packing coefficients Kchan of the solvent molecules located in channels of the porphyrin matrix were also calculated. For ZnTPP crystalline solvates, we found the correlations between heat of desolvation and free volume per guest molecules of unit cell, as well as between the coefficient of channel packing and the temperature for which the half-lifetime of desolvation phase is equal to 60 min. A linear kinetic compensation effect for the crystalline solvates studied was found.