title: First radical cation salt of paramagnetic transition metal complex containing TTF as ligand, [Cu(II)(hfac)2(TTF-py)2](PF6) x 2CH2Cl2 (hfac = hexafluoroacetylacetonate and TTF-py = 4-(2-tetrathiafulvalenyl-ethenyl)pyridine).
abstract: The preparation, X-ray crystal structure, EPR data, and magnetic measurement of [Cu(II)(hfac)(2)(TTF-py)(2)](PF(6)).2CH(2)Cl(2), a novel material where the conducting and the localized spin systems are covalently linked through conjugated bridges, are reported. The partial oxidation of the TTF-type organic donor ligand yielded the first radical cation salt of a paramagnetic transition metal complex. Moreover, this compound shows a mixed valence state at the unimolecular level, and additionally, the arrangement of the molecules in the crystal structure revealed the presence of isolated mixed valence TTF dimers.
authors.affiliation: Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR 6511 CNRS-Université de Rennes 1, France.
authors.forename: Fatima
authors.initials: F
authors.lastname: Setifi
authors.forename: Lahcène
authors.initials: L
authors.lastname: Ouahab
authors.forename: Stéphane
authors.initials: S
authors.lastname: Golhen
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Gunzi
authors.initials: G
authors.lastname: Saito