ChemInform Abstract: Organo‐Lanthanoide Compounds as Catalysts in the Hydrosilylation of Olefins and Ketones.

Synthesis, Structure, and Reactions of Hydride, Borohydride, and Aluminohydride Compounds of the f-Elements

“…233 Reactions of lanthanide hydrides with ketones and aldehydes received little attention. Addition of [Cp* 2 -LaH] 2 to di-tert-butyl ketone (eq 65) 238 and addition of [Cp 2 LuH(THF)] 2 to benzaldehyde (eq 66) 239 afforded the corresponding alkoxide derivatives. Some reactions of lanthanide hydrides with carbon monoxide were reported (eqs 67-69).…”

The Rh4(CO)12-Catalyzed Hydroformylation of 3,3-Dimethylbut-1-ene Promoted with HMn(CO)5. Bimetallic Catalytic Binuclear Elimination as an Origin for Synergism in Homogeneous Catalysis

“…The most convincing evidence to date for such a phenomenolgical basis for catalytic synergism appears to come from the Russian group of Beletskaya. They were able to show that lanthanum hydrides react in a stoichiometric manner with acyl cobalt tetracarbonyls to give aldehyde . They were also able to show that catalytic production of aldehydes, well beyond that achievable from simple cobalt catalysis, can occur in the presence of excess alkene, hydrogen, and carbon monoxide when lanthanum hydrides and cobalt carbonyl are added together .…”

“…They were able to show that lanthanum hydrides react in a stoichiometric manner with acyl cobalt tetracarbonyls to give aldehyde. 17 They were also able to show that catalytic production of aldehydes, well beyond that achievable from simple cobalt catalysis, can occur in the presence of excess alkene, hydrogen, and carbon monoxide when lanthanum hydrides and cobalt carbonyl are added together. 18 However, in-situ spectroscopic and kinetic information was not available.…”

Direct Lanthanide−Transition Metal Interactions: Synthesis of (NH3)2YbFe(CO)4and Crystal Structures of {[(CH3CN)3YbFe(CO)4]2·CH3CN}∞and [(CH3CN)3YbFe(CO)4]∞

“…Bonds between transition metals are most common. However, metal−metal bonds between transition metals and electropositive elements, such as alkali, alkaline earth, lanthanide, , and actinide elements 6 are relatively rare. Direct transition metal−lanthanide bonds have been largely inferred from infrared and NMR spectroscopic data, while X-ray diffraction studies are scarce.…”

“…However, metal−metal bonds between transition metals and electropositive elements, such as alkali, alkaline earth, lanthanide, , and actinide elements 6 are relatively rare. Direct transition metal−lanthanide bonds have been largely inferred from infrared and NMR spectroscopic data, while X-ray diffraction studies are scarce. A Lu 3+ to Ru bond (2.955 Å) in [Cp 2 (THF)LuRu(CO) 2 Cp] has been reported. 5a,b In a preliminary report, we described the first example of metal−metal bonding involving a divalent lanthanide and a transition metal element.…”