K. Wajdahermanowicz et al., SYNTHESIS, REACTIVITY AND STRUCTURE OF IR-4(MU-CO)(3)(CO)(5)(MU-PPH(2)PYL)(PPH(2)PYL)(2)], Inorganica Chimica Acta, 232(1-2), 1995, pp. 207-209
Ir-4(CO)(12) reacts with P(Ph(2)pyl)(3) giving Ir-4(mu-CO)(3)(CO)(5)(m
u-PPh(2)pyl)(PPh(2)pyl)(2)] containing one phosphine bridging ligand c
oordinating via P and N atoms and [Ir-4(mu-CO)(3)(CO)(6)(PPh(2)pyl)(3)
] which in solution is at equilibrium with the former cluster.