Catalyst design. The activation of a trinuclear metal cluster complex by metal atom substitution

Solid‐State Structure, Quantum Calculations and Spectroscopic Characterization of the Hydrogen‐Bonded Complex [Os(bpy)2(CO)(EtO···H‐DMAP)][PF6]2

“…Thus, the alkoxide form can be excluded, even if the OsϪO distance (2.078 Å ) is short. Also, several alkoxide-like complexes that have the alkoxy group in a bridged coordination show OsϪO distances around 2.10 Å , as reported, for example, in the nonacarbonyl(µ-σ-η-dimethylamino-1-methoxy-1-Scheme 2 oxobut-2-ene-2,4-diyl)(µ-methoxo)triosmium dichloromethane solvate complex by Adams et al [43] Finally, the OsϪO distance can be substantially larger {up to 2.40 Å as in the…”

Characterization of Catalytically Active Octahedral Metal Halide Cluster Complexes

“…Hence, carbonyl cluster catalysis with retention of the cluster framework is difficult, and reactions catalyzed by coordinatively unsaturated carbonyl clusters with intact metal frameworks that have been isolated are rare [3]. Carbonyl clusters have been widely used as catalyst precursors for supported heterogeneous catalysts [4][5][6] or as models of metal catalysts [7,8]. In the latter cases, the carbonyl clusters afford uncoordinated metal species during the course of the reaction with or without decomposition of the metal frameworks, and the isolation and characterization of the adducts of carbonyl clusters with reactants are fairly easy.…”

Dppm-substituted ruthenium clusters with capping sulfido and selenido ligands derived from thiourea, tetramethylthiourea and elemental selenium

“…CO)][34] by replacement of an equatorial carbonyl group on each of the two Ru atoms by the dppm ligand. The complexes display tetrahedral Ru 3 E cores with almost equilatorial Ru3 10].…”