Basicity of Highly Substituted β-Octaalkyl-meso-aryl- and -meso-thienyl Porphyrins View Full Text


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Article Info

DATE

2018-10

AUTHORS

A. A. Nikitin, M. E. Klyueva, T. N. Lomova

ABSTRACT

5-Phenyl-, 5,15-diphenyl-5,15-di(thiophen-2-yl)-, and 5,10,15,20-tetraphenyloctaalkyl-21H,23H-porphyrins in benzene–acetic acid mixtures are moderate bases (pK–0.27 to–2.48). There is no simple correlation between the basicity constants and any electronic or geometric structure parameter of their molecules due to the contributions of three factors to the basicity: distortion of the planar structure in highly substituted macrocycles and their protonated forms, positive charge delocalization over the conjugated bond system, and electronic effects of substituents. More... »

PAGES

1553-1558

References to SciGraph publications

  • 2006-06. NH-acid properties of porphyrins in acetonitrile in RUSSIAN JOURNAL OF GENERAL CHEMISTRY
  • 2005-03. Influence of the Structure of the Organic Moiety of Copper(II) Porphyrins on Their Reactivity toward Acids in RUSSIAN JOURNAL OF GENERAL CHEMISTRY
  • 2003-03. Acid-Base Properties of Sterically Strained Tetraethyltetramethylporphyrin Derivatives in RUSSIAN JOURNAL OF GENERAL CHEMISTRY
  • 2008-09-10. Acid-base and coordination properties of some palladium(II)porphyrins in RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
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    http://scigraph.springernature.com/pub.10.1134/s1070428018100184

    DOI

    http://dx.doi.org/10.1134/s1070428018100184

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