Showing papers by "N. Zh. Mamardashvili published in 2015"
TL;DR: In this paper, the design and synthesis of hybrid multi-metalloporphyrin assembles have been performed and the chemical structure of synthesized complexes and their stability in solution were confirmed by the methods of 2D DOSY NMR spectroscopy, which have been specially adapted for these supramolecular architectures in solutions.
37 citations
TL;DR: In this article, synthesis and NMR studies of Ru(II) and Sn(IV) tetraphenylporphyrins supramolecular complexes were carried out, and diffusion coefficients of the complexes, porphyrinates, and solvents were determined by DOSY NMR spectroscopy.
26 citations
TL;DR: In this article, the synthesis and complexing properties of calix[4]pyrroles towards anions, ion pairs and neutral molecules of various nature are analyzed, summarized and classified.
Abstract: Published data about the synthesis and complexing properties of calix[4]pyrroles towards anions, ion pairs and neutral molecules of various nature are analyzed, summarized and classified. Synthetic approaches to the parent macrocycles and methods of their functionalization are presented. General principles, mechanisms and driving forces of the formation of calix[4]pyrrole-based supramolecular complexes are disscussed. Most attention is concentrated on the factors providing effective control of the formation of such structure.The bibliography includes 79 references.
14 citations
TL;DR: In this article, the interaction of 5,10,15,20-tetraphenylporphyrin, 2-bromo-5, 10, 15, 20-TTP, and 2,3,12,13-tetrabromo with manganese(II) chloride in dimethylformamide was studied by means of spectrophotometry.
Abstract: Interaction of 5,10,15,20-tetraphenylporphyrin, 2-bromo-5,10,15,20-tetraphenylporphyrin, and 2,3,12,13-tetrabromo-5,10,15,20-tetraphenylporphyrin with manganese(II) chloride in dimethylformamide has been studied by means of spectrophotometry. The corresponding chloride acido complexes of manganese(III) has been so prepared and identified. The complexes could be reduced into manganese(II) tetraphenylporphyrinates in the presence of potassium hydroxide in dimethylformamide.
10 citations
TL;DR: In this article, the basicity constants and kinetic parameters for the formation of zinc complexes of 2,3,7,8,12,13,17,18-octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin in the above systems have been determined, and the effect of meso-thienyl substituents on the reactivity of octamethylporphrin derivative has been discussed.
Abstract: 2,3,7,8,12,13,17,18-Octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin has been synthesized, and its acid-base and complexing properties have been studied by spectrophotometry in the systems HClO4-acetonitrile (298 K) and Zn(OAc)2-acetonitrile. The basicity constants and kinetic parameters for the formation of zinc complexes of 2,3,7,8,12,13,17,18-octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin in the above systems have been determined, and the effect of meso-thienyl substituents on the reactivity of octamethylporphyrin derivative has been discussed. Acid-base and complexing properties of 2,3,7,8,12,13,17,18-octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin have been compared with those of 5,10,15,20-tetrakis(4-tert-butylphenyl)-2,3,7,8,12,13,17,18-octamethylporphyrin.
3 citations
TL;DR: In this article, the bromination of β-tetrabromosubstituted zinc tetra(4-bromophenyl)porphyrinate with Nbromosuccinimide in a mixture of chloroform with dimethylformamide yielded 2.
Abstract: The reaction of 5,10,15,20-tetra(4-bromophenyl)porphyrin with N-bromosuccinimide in a mixture of chloroform with dimethylformamide afforded 2-bromo-5,10,15,20-tetra(4-bromophenyl)porphyrin. In similar conditions the bromination of Zn(II) 5,10,15,20-tetra(4-bromophenyl)porphyrinate led to Zn(II) 2,3,12,13-tetrabromo-5,10,15,20-tetra(4-bromophenyl)porphyrinate. By the bromination of β-tetrabromosubstituted zinc tetra(4-bromophenyl)porphyrinate with N-bromosuccinimide in a mixture chloroform–dimethylformamide Zn(II) 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetra(4-bromophenyl)porphyrinate was obtained. The synthesized compounds were characterized by electron absorption, 1Н NMR and mass spectra.
2 citations
TL;DR: In this article, the metal exchange reaction between Cd(II) octa(4-bromophenyl)tetraazaporphyrinate and cobalt chloride in dimethylformamide and dimethyl sulfoxide was studied by spectrophotometry.
Abstract: The metal-exchange reaction between Cd(II) octa(4-bromophenyl)tetraazaporphyrinate and cobalt chloride in dimethylformamide and dimethyl sulfoxide was studied by spectrophotometry. Kinetic parameters of the metal-exchange reaction were determined. A possible stoichiometric mechanism of the reaction was proposed. Cobalt(III) octa(4-bromophenyl)tetraazaporphyrinate was synthesized and characterized.
2 citations
TL;DR: In this article, the synthesis and complexing properties of calix[4]pyrroles towards anions, ion pairs and neutral molecules of various nature are analyzed, summarized and classified.
Abstract: Published data about the synthesis and complexing properties of calix[4]pyrroles towards anions, ion pairs and neutral molecules of various nature are analyzed, summarized and classified. Synthetic approaches to the parent macrocycles and methods of their functionalization are presented. General principles, mechanisms and driving forces of the formation of calix[4]pyrrole-based supramolecular complexes are disscussed. Most attention is concentrated on the factors providing effective control of the formation of such structure.The bibliography includes 79 references.
1 citations
TL;DR: In this paper, a 1,8-diazabicyclo[5.4.0]undec-7-ene-Zn(OAc)2-acetonitrile was obtained for methoxyphenyl alkyl derivatives of porphyrins.
Abstract: 5,15-Bis(4′-methoxyphenyl)-10,20-bis(4″-nitrophenyl)-2,8,12,18-tetramethyl-3,7,13,17-tetraethylporphyne was synthesized and studied spectrophotometrically in the systems 1,8-diazabicyclo[5.4.0]undec-7-ene-acetonitrile, Zn(OAc)2-acetonitrile, 1,8-diazabicyclo[5.4.0]undec-7-ene-Zn(OAc)2-acetonitrile. The orders of acidity and kinetic activity were obtained for methoxyphenyl alkyl derivatives of porphyrins in these systems.
1 citations
TL;DR: In this article, the reaction of metal exchange of Mg(II), Cd(II) octa(4-bromophenyl)tetraazaporphyrinates with MnCl2 in dimethylformamide has been studied by means of spectrophotometry.
Abstract: Reaction of metal exchange of Mg(II) and Cd(II) octa(4-bromophenyl)tetraazaporphyrinates with MnCl2 in dimethylformamide has been studied by means of spectrophotometry. Kinetic parameters of the reaction have been determined; the reaction stoichiometry mechanism has been suggested.
1 citations