title: Antiferromagnetic Coupling in a Gadolinium(III) Semiquinonato Complex.
abstract: The strongest antiferromagnetic coupling to Gd(III) so far reported was found for the complex [Gd(Hbpz(3))(2)(dtbsq)] small middle dot2 CHCl(3) (1; Hbpz(3)=hydrotris(pyrazolyl)borate; dtbsq=3,5-di-tert-butylsemiquinonato; see structure). At 245 K the magnetic susceptibility of 1 is lower than expected for two uncorrelated spins of 7/2 and 1/2, and the lowering of chiT with increasing temperature suggests that this is due to antiferromagnetic interaction between Gd(III) and the radical.
authors.affiliation: Dipartimento di Chimica Università degli Studi di Firenze Via Maragliano 75/77, 50144 Firenze (Italy).
authors.initials: A
authors.lastname: Caneschi
authors.initials: A
authors.lastname: Dei
authors.initials: D
authors.lastname: Gatteschi
authors.initials: L
authors.lastname: Sorace
authors.initials: K
authors.lastname: Vostrikova