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Cation-Induced dimerization of nickel(II), platinum(II), and palladium(II) meso-tetra(benzo-15-crown-5)porphyrinates

  • Coordination Compounds
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Abstract

Cation-induced dimerization of nickel(II), platinum(II), and palladium(II) meso-tetra(benzo-15-crown-5)porphyrinates (Ni(II)TCP, Pd(II)TCP, and Pt(II)TCP) on treatment with potassium thiocyanate in a chloroform-methanol solution has been studied by electronic absorption spectroscopy. The formation of [{MTCP}2(K+)4](SCN−)4 in solution induces a hypsochromic shift of the Soret band and a bathochromic shift of the β-band with respect to their positions in the spectrum of MTCP. The equilibrium constants (K) for the 2MTCP + 4K+ = [{MTCP}2(K+)4] processes at 20°C are determined to be as follows: log K Ni(II)TCP = 27.31 ± 1.67, logK Pd(II)TCP = 27.16 ± 1.43, and logK Pt(II)TCP = 26.15 ± 1.56.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    A. Yu. Chernyad’ev, N. M. Logacheva & A. Yu. Tsivadze

Authors
  1. A. Yu. Chernyad’ev
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  2. N. M. Logacheva
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  3. A. Yu. Tsivadze
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Additional information

Original Russian Text © A.Yu. Chernyad’ev, N.M. Logacheva, A.Yu. Tsivadze, 2006, published in Zhurnal Neorganicheskoi Khimii, 2006, Vol. 51, No. 5, pp. 788–791.

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Chernyad’ev, A.Y., Logacheva, N.M. & Tsivadze, A.Y. Cation-Induced dimerization of nickel(II), platinum(II), and palladium(II) meso-tetra(benzo-15-crown-5)porphyrinates. Russ. J. Inorg. Chem. 51, 720–723 (2006). https://doi.org/10.1134/S0036023606050068

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  • DOI: https://doi.org/10.1134/S0036023606050068

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