First Paramagnetic 4d Transition-Metal Complex with a Redox-Active Tetrathiafulvalene Derivative, [Ru(salen)(PPh3)(TTF-CH=CH-Py)]BF4 [salen2- = N,N'-Ethane-1,2-diylbis(salicylidenamine), PPh3 = Triphenylphosphine, TTF-CH=CH-Py = 4-(2-Tetrathiafulvalenylethenyl)pyridine].

Fabrice Pointillart (1) , Yann Le Gal (2) , Stéphane Golhen (2) , Olivier Cador (2) , Lahcene Ouahab (2)

1 Department of Chemistry and INSTM Research Unit
2 ISCR - Institut des Sciences Chimiques de Rennes

The 1st paramagnetic 4d transition-metal complex with a redox-active tetrathiafulvalene ligand was synthesized. The prepn., x-ray structure, electrochem., and ESR measurements of [Ru(salen)(PPh3)(TTF-CH:CH-Py)](BF4) [1(BF4), salenH2 = N,N'-ethane-1,2-diylbis(salicylidenamine), TTF-CH:CH-Py = 4-(2-tetrathiafulvalenylethenyl)pyridine] are reported. The crystal structure reveals that the paramagnetic RuIII (s = 1/2) center is in a tetragonally elongated octahedral geometry and the TTF-CH:CH-Py ligand is coordinated to the axial position of the RuIII ion through the nitrogen atom of the pyridine group. Thus, 1(BF4) is an attractive precursor to study future π-4d interactions in dual-property conducting and magnetic materials.

Keywords: crystal structure ruthenium salen tetrathiafulvalenylethenyl pyridine phosphine complex; electrochem oxidn ruthenium salen tetrathiafulvalenylethenyl pyridine phosphine complex; ESR ruthenium salen tetrathiafulvalenylethenyl pyridine phosphine complex; ethanediylbissalicylidenamine ruthenium tetrathiafulvalenylethenyl pyridine phosphine complex prepn structure electrochem; ruthenium salen tetrathiafulvalenylethenyl pyridine phosphine complex prepn structure electrochem

Domains: Chemical Sciences; Organic chemistry

Fabrice Pointillart, Yann Le Gal, Stéphane Golhen, Olivier Cador, Lahcene Ouahab. First Paramagnetic 4d Transition-Metal Complex with a Redox-Active Tetrathiafulvalene Derivative, [Ru(salen)(PPh3)(TTF-CH=CH-Py)]BF4 [salen2- = N,N'-Ethane-1,2-diylbis(salicylidenamine), PPh3 = Triphenylphosphine, TTF-CH=CH-Py = 4-(2-Tetrathiafulvalenylethenyl)pyridine].. Inorganic Chemistry, 2008, 47, pp.9730--9732. ⟨10.1021/ic801340k⟩. ⟨hal-01151568⟩