Complex Formation and Spectral Properties of meso-Phenyltetrabenzoporphyrins in Pyridine and N,N-Dimethylformamide
Authors: Berezin, D. S.; Toldina, O. V.; Kudrik, E. V.
Source: Russian Journal of General Chemistry, Volume 73, Number 8, August 2003 , pp. 1309-1314(6)
Publisher: MAIK Nauka/Interperiodica
Abstract:Contributions of structural (macroring distortion) and polarization (in asymmetrically substituted derivatives) effects into the reactivity and chromophoric properties of substituted porphyrins were revealed on the basis of the kinetics of complex formation of nona-, deca-, undeca-, and dodecasubstituted porphyrins (meso-phenyltetrabenzoporphyrins) with Zn(OAc)2 in pyridine and the electronic absorption spectra of the ligands and their complexes with Zn(II) and Cu(II) in pyridine and N,N-dimethylformamide (DMF). Dodecaphenyl substitution produces a weaker ring distortion in the more aromatic tetrabenzoporphyrin compared with porphyrins themselves. Irrespective of the degree of macroring nonplanarity, the Zn (II) and Cu complexes of tetrabenzoporphyrins with increasing degree of meso-phenyl substitution meet a spectral stability criterion.
Document Type: Research Article
Affiliations: Ivanovo State University of Chemical Technology, Ivanovo, Russia. Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia
Publication date: 2003-08-01