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Controlling the hydrogenolysis of silica-supported tungsten pentamethyl leads to a class of highly electron deficient partially alkylated metal hydrides.

ABSTRACT:

SUBMITTER: Maity N

PROVIDER: S-EPMC5964938 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Controlling the hydrogenolysis of silica-supported tungsten pentamethyl leads to a class of highly electron deficient partially alkylated metal hydrides.

Maity Niladri N Barman Samir S Callens Emmanuel E Samantaray Manoja K MK Abou-Hamad Edy E Minenkov Yury Y D'Elia Valerio V Hoffman Adam S AS Widdifield Cory M CM Cavallo Luigi L Gates Bruce C BC Basset Jean-Marie JM

Chemical science 20151130 2

The well-defined single-site silica-supported tungsten complex [([triple bond, length as m-dash]Si-O-)W(Me)5], 1, is an excellent precatalyst for alkane metathesis. The unique structure of 1 allows the synthesis of unprecedented tungsten hydrido methyl surface complexes via a controlled hydrogenolysis. Specifically, in the presence of molecular hydrogen, 1 is quickly transformed at -78 °C into a partially alkylated tungsten hydride, 4, as characteriz ...[more]

PMID: 29899899

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