Journal of the American Chemical Society, Vol.123, No.3, 500-501, 2001
(eta(5)-C5Me5)Ru(mu(2)-(PrN)-Pr-i=C(Me)(NPr)-Pr-i)Ru(X)(eta(5)-C5Me5): an unusual bonding mode of mu(2)-amidinate ligand providing the first unequivocal evidence for coordinating ability of pi-conjugate electrons of the amidinate ligands to transition metals