Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Berezin, Boris D."'
Publikováno v:
Russian Journal of General Chemistry. 83:1410-1418
The kinetics and mechanism of one of the most complicated chemical reactions of coordination compounds, where two different porphyrin complexes exchange central metal ions and the corresponding ligands, were considered using a number of metal porphyr
Publikováno v:
Russian Journal of Inorganic Chemistry. 58:734-739
Experimental data on electron absorption spectra (EASs) and the kinetics of substitution of Co2+ for the central Cd2+ ion in rhodoporphyrin complexes (CdRodP) in the reaction with CoCl2 in acetonitrile (AN) and ZnCl2 in dimethyl sulfoxide (DMSO) and
Publikováno v:
Russian Journal of Coordination Chemistry. 36:913-917
Metal exchange reactions between Cd chlorophyll (a) or Cd pheophorbide (a) and cobalt chloride in ethanol were studied by spectrophotometry. The order of the reaction was determined. It was found that the metal exchange follows the stoichiometric mec
Autor:
Roman S. Kumeev, N. Zh. Mamardashvili, Olga G. Khelevina, Natalya V. Chizhova, Berezin Boris D
Publikováno v:
Russian Journal of General Chemistry. 80:2387-2390
Complexes Co2+ and Co3+ with octaphenyltetraazaporphyrin, octa(4-bromphenyl)tetraazaporphyrin and octa(4-nitrophenyl)tetraazaporphyrin were obtained and identified. The influence of the composition of reaction medium on the oxidation processes of the
Publikováno v:
Russian Journal of Coordination Chemistry. 36:711-714
The utility of natural dyes (chlorophyll, protoporphyrin, and their derivatives) as ecologically pure new-generation dyes that are safer than common synthetic arene-based dyes is discussed. New dyes were obtained from chlorophyll and protoporphyrin d
Publikováno v:
Russian Journal of Physical Chemistry A. 84:588-592
The thermal effects of mixing of aqueous calcium chloride with sodium citrate and ethylenedi-aminetetraacetate in the absence and presence of sodium oxalate have been measured at 25°C. The thermal effects of dilution of aqueous calcium chloride solu
Publikováno v:
Russian Journal of Coordination Chemistry. 35:335-340
The effect of accumulation of the tert-butyl groups in the phenyl rings of tetraphenylporphine on the complex formation rate of tetra(3,5-di-tert-butylphenyl)porphine (I) with copper(II), zinc(II), and cadmium(II) acetates in acetic acid and in a mix
Publikováno v:
Russian Journal of Physical Chemistry. 82:217-221
Solutions of tetraphenylporphins (H2TPhP) substituted in one and four phenyl residues by alkyl (CH3- and -C(CH3)3) and hydroxyl groups were studied by electronic spectroscopy and solution thermochemistry. Porphyrin ligands and their complexes with zi
Publikováno v:
Russian Journal of Coordination Chemistry. 33:857-864
The kinetics of the complex formation reaction of the β-hexamethyldiethylcorrole, [H3(β-Me6Et2)Cor], with zinc and cobalt acetates and with zinc acetylacetonate in DMF was studied. The rate of the complexation process between H3(β-Me6Et2)Cor and Z
Publikováno v:
Russian Journal of Inorganic Chemistry. 52:1430-1434
The metal-exchange reaction between Cd-deuteroporphyrin or Cd-ematoporphyrin and ZnCl2 in dimethyl sulfoxide (DMSO) was studied spectrophotometrically. The order and activation parameters of the reaction of Cd2+ replacement by zinc ions were calculat