113669-28-6Relevant articles and documents
Promotion of Me/CO migratory insertion by transition-metal Lewis acids. Synthesis and reactivity of a transition-metal heterobimetallic carbonyl alkyl anion, MeFeW(CO)9-
Arndt,Bancroft,Darensbourg,Janzen,Kim,Reibenspies,Varner,Youngdahl
, p. 1302 - 1309 (2008/10/08)
The heterobimetallic alkyl anion 1 was prepared by alkylation of FeW(CO)92- using MeI or MeOTs. Addition of the monometallic MeFe(CO)4- to a solution of W(CO)5·THF produced the same product. Spectroscopic data indicated the structure of 1 to be analogous to that of HFeW(CO)9- or Ph3AuFeW(CO)9-, i.e., containing octahedral metal centers with a CH3 group bound to Fe, cis to the Fe-W bond. A comparative rate study of the reaction of with monomeric MeFe(CO)4- and with 1 indicated the promotional effect of W(CO)50 for the Me/CO migratory insertion reaction. There was no reaction of MeFe(CO)4- with CO2, whereas bimetallic 1 readily added CO2 yielding MeC(O)OW(CO)5-. With CS2 a heterobimetallic, formulated as μ-MeCS2FeW(CO)8-, was produced.
