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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
Author(s) -
Konarev Dmitri V.,
Neretin Ivan S.,
Slovokhotov Yuri L.,
Yudanova Evgeniya I.,
Drichko Natal'ya V.,
Shul'ga Yuri M.,
Tarasov Boris P.,
Gumanov Leonid L.,
Batsanov Andrei S.,
Howard Judith A. K.,
Lyubovskaya Rimma N.
Publication year - 2001
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20010618)7:12<2605::aid-chem26050>3.0.co;2-p
Subject(s) - fullerene , molecule , crystallography , chemistry , van der waals force , hyperfine structure , organic chemistry , physics , quantum mechanics
New molecular complexes of fullerenes C 60 and C 70 with tetraphenylporphyrins [M(tpp)] in which M=H 2 , Mn II , Co II , Cu II , Zn II and Fe III Cl, have been synthesised. Crystal structures of two C 60 complexes with H 2 TPP, 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 H 2 TPP ⋅ 2 C 60 ⋅ 3 C 6 H 6 , puckered graphite‐like layers in H 2 TPP ⋅ 2 C 60 ⋅ 4 C 6 H 6 , zigzag chains in [Cu(tpp)] ⋅ C 70 ⋅ 1.5 C 7 H 8 ⋅ 0.5 C 2 HCl 3 and columns in [Cu(tpp)] 2 ⋅ C 60 . H 2 TPP has van der Waals contacts with C 60 through nitrogen atoms and phenyl groups. Copper atoms of the [Cu(tpp)] 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.