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New molecular complexes of fullerenes C-60 and C-70 with tetraphenylporphyrins M(tpp), in which M = H-2, Mn, Co, Cu, Zn, and FeCl.

Konarev, D. V. and Neretin, I. S. and Slovokhotov, Y. L. and Yudanova, E. I. and Drichko, N. V. and Shul'ga, Y. M. and Tarasov, B. P. and Gumanov, L. L. and Batsanov, A. S. and Howard, J. A. K. and Lyubovskaya, R. N. (2001) 'New molecular complexes of fullerenes C-60 and C-70 with tetraphenylporphyrins M(tpp), in which M = H-2, Mn, Co, Cu, Zn, and FeCl.', Chemistry : a European journal., 7 (12). pp. 2605-2616.

Abstract

New molecular complexes of fullerenes C-60 and C-70 with tetraphenyl-porphyrins [M(tpp)] in which M = H-2, Mn-II, Co-II, Cu-II, Zn-II and (FeCl)-Cl-III, have been synthesised. Crystal structures of two C-60 complexes with H2TPP, which differ only in the number of benzene solvated molecules, and C-60 and C-70 complexes with [Cu(tpp)] have been studied. The fullerene molecules form a honeycomb motif in H2TPP . 2C(60). 3C(6)H(6), puckcred graphite-like layers in H2TPP . 2C(60). 4C(6)H(6), zigzag chains in [Cu(tpp)].C-70.1.5C(7)H(8).0.5C(2)HCl(3) and columns in [Cu(tpp)](2).C-60. H2TPP has van der Waals contacts with C-60 through nitrogen atoms and phenyl groups. Copper atoms of the [Cu(tpp)l molecules are weakly coordinated with C- 70, but form no shortened contacts with C-60. The formation of molecular complexes with fullerenes affects the ESR spectra of [M(tpp)] (M = Mn, Co and Cu). [Mn(tpp)] in the complex with C- 70 lowers its spin state from S = 5/2 to S = 1/2, whereas [Co(tpp)] and [Cu(tpp)] change the constants of hyperfine interaction. ESR, IR, UV-visible and X-ray photoelectron spectroscopic data show no noticeable charge transfer from the porphyrinate to the fullerene molecules.

Item Type:Article
Keywords:Copper, Fullerenes, Porhyrinoids, Structure elucidation.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1002/1521-3765(20010618)7:12<2605::AID-CHEM26050>3.0.CO;2-P
Record Created:11 May 2007
Last Modified:08 Apr 2009 16:31

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