p-Carborane: a new cage spacer for photoactive metal polypyridine dyads.
The first example of a binuclear ruthenium complex involving the p-carborane framework in the bridging ligand is reported. The bridging ligand is a symmetric linear array comprising a central p-carborane unit, two p-phenylene spacers, and two 5-yl-2,2'-bipyridine coordinating units. A homobinuclear Ru(II) complex, with 2,2'-bipyridine as peripheral ligands, was synthesized and characterized. The Ru(II)-Ru(III) mixed-valence species, obtained by partial oxidation, has been investigated with steady-state and time-resolved techniques in CH3CN. The rate of photoinduced electron transfer is 2.3 x 10(8) s(-1).
Ghirotti
Marco
M
Dipartimento di Chimica, Università di Ferrara, INSTM Sezione di Ferrara, and ISOF-CNR Sezione di Ferrara, 44100 Ferrara, Italy.
Schwab
Peter F H
PF
Indelli
M Teresa
MT
Chiorboli
Claudio
C
Scandola
Franco
F