Mi. Bruce et al., PREPARATION AND STRUCTURE OF CO)(2)(PPH3)(ETA-C5ME5)][FE-3(MU(3)-C2BUT)(CO)(9)], Australian Journal of Chemistry, 51(5), 1998, pp. 433-435
The reaction between RuCl(C=CHBut)(PPh3)(eta-C5Me5) and Fe-2(CO)(9) af
forded the salt O)(2)(PPh3)(eta-C5Me5)][Fe-3(mu(3)-C2But)(CO)(9)], whi
ch has been characterized by a single-crystal X-ray structure determin
ation. The cation has a piano-stool structure, while the anion contain
s a CCBut ligand sitting on a triangular Fe-3 cluster.