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ISSN 1998-9539

Spectral Characteristics and Solvation of Tetrakis(3,5-di-tert-butylphenyl)porphine and its Complexes with Some d Metals

Elena V. Antina,a@ Elena V. Balantseva,b and Mikhail B. Berezina


aInstitute of Solution Chemistry of Russian Academy of Sciences, 153045 Ivanovo, Russia

bIvanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia


@Corresponding author E-mail: eva@isc-ras.ru


DOI: 10.6060/mhc2010.4.228

Macroheterocycles 2010 3(4) 228-233


An influence of structural factors and surrounding features on both spectral and enthalpy characteristics of the dissolution and solvation processes and the thermodynamic stability of tetrakis(3,5-di-tert-butylphenyl)porphine (H2Р) and its coordination compounds with a number of d-metals have been studied in different solvents using spectroscopic and calorimetric methods. The contribution of π-π-interaction of H2Р ([МР]) - benzene to the solvation process was estimated. It have been shown that π-π-stacking interaction between aromatic systems of [МР] and benzene molecules is in the following sequence: [PdP]< [CdP]< [NiP]< [ZnP]< [CuP]< [AgP]< [CoP]. The stability of [МР] increases in the row: [HgP] < [CdP] < [ZnP] < [AgP] < [CuP] < [NiP] ≈ [CoP] < [PdP], which is in agreement with spectral criterion of strength. The coordination unsaturation of metal porphyrins follows the sequence: [(Ac)FeP] < [NiP] < [PdP] < [CoP] << [CdР] <[ZnР] < [CuP] < [AgP] < [HgР] < [(Ac)MnР].



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