Pentanuclear Polyhydride Cluster of Ruthenium with Trigonal-Bipyramidal Geometry. Synthesis and Fluxional Behavior
作者:Yasuhiro Ohki、Naoki Uehara、Hiroharu Suzuki
DOI:10.1021/om020335k
日期:2003.1.1
The reaction of the ruthenium diamine complex CpRu(tmeda)Cl (1; Cp = eta(5)-C5H5) with LiAlH4 afforded the novel pentaruthenium cluster Cp5Ru5H7 (2) in the tbp geometry. The mixed-ligand cluster Cp4Cp*Ru5H7 (4; Cp* = eta(5)-C5Me5) was derived in a similar manner from I and CP*Ru(acac) (3). Complex 2 exhibits a new type of fluxional behavior that involves exchange of the CpRu groups among the axial sites and the equatorial sites.