Spectrophotometric study of acid-base and coordination properties of 2,3,7,8,12,13,17,18-octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin

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 HClO 4 -acetonitrile (298 K) and Zn(OAc) 2 -acetonitrile. The basicity constants and kinetic parameters f...

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Published in:Russian journal of general chemistry 2015-04, Vol.85 (4), p.876-881
Main Authors: Ivanova, Yu. B., Razgonyaev, O. V., Semeikin, A. S., Mamardashvili, N. Zh
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Language:English
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Chemistry and Materials Science
Chemistry/Food Science
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description 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 HClO 4 -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.
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title Spectrophotometric study of acid-base and coordination properties of 2,3,7,8,12,13,17,18-octamethyl-5,10,15,20-tetrakis(thiophen-2-yl)porphyrin
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