In [Ru-3(C3H9O3P)(C25H22P2)(CO)(9)] one Ru-Ru bond is slightly longer
than the other two and axial Ru-CO bonds are longer than corresponding
equatorial bonds. The bridging bis(diphenylphosphino)methane (dppm) f
orms longer P-Ru distances than the equatorial trimethylphosphite liga
nd.