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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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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.

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Authors and Affiliations

  1. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045, Russia

    Yu. B. Ivanova & N. Zh. Mamardashvili

  2. Ivanovo State University of Chemistry and Technology, Sheremetevskii pr. 7, Ivanovo, 153000, Russia

    O. V. Razgonyaev & A. S. Semeikin

Authors
  1. Yu. B. Ivanova
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  2. O. V. Razgonyaev
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  3. A. S. Semeikin
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  4. N. Zh. Mamardashvili
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Correspondence to Yu. B. Ivanova.

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Original Russian Text © Yu.B. Ivanova, O.V. Razgonyaev, A.S. Semeikin, N.Zh. Mamardashvili, 2015, published in Zhurnal Obshchei Khimii, 2015, Vol. 85, No. 4, pp. 635–640.

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Ivanova, Y.B., Razgonyaev, O.V., Semeikin, A.S. et al. 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. Russ J Gen Chem 85, 876–881 (2015). https://doi.org/10.1134/S1070363215040192

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