A new type of tungsten(VI) phenylimido alkylidene complex and its triorganotungsten precursor with an O,N-chelating ligand; molecular structures of [W(CH2SiMe3)3(NPh){OCPh2(2-py)}] and [W{CHSiMe3(CH2SiMe3)(NPh){OCPh2(2-py)}](py = pyridine)

Paul A Van Der Schaaf,Wilberth J J Smeets,David M Grove,Rob A T M Abbenhuis,Anthony L Spek,Gerard Van Koten

doi:10.1039/c39930000504

A new type of tungsten(VI) phenylimido alkylidene complex and its triorganotungsten precursor with an O,N-chelating ligand; molecular structures of [W(CH2SiMe3)3(NPh){OCPh2(2-py)}] and [W{CHSiMe3(CH2SiMe3)(NPh){OCPh2(2-py)}](py = pyridine)

Paul A Van Der Schaaf, Wilberth J J Smeets + Show 4 more

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https://doi.org/10.1039/c39930000504

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Journal: J. Chem. Soc., Chem. Commun.	Publication Date: Jan 1, 1993
Citations: 13

#Alkylidene Complex #Ring-opening Metathesis Polymerization Reaction + Show 8 more

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Abstract

A new type of tungsten(VI) alkylidene complex has been prepared with [OCPh2(2-py)], a potentially bidentate O,N-chelating monoanionic ligand, and the corresponding triorganotungsten phenylimido alkoxide precursor complexes have been isolated; the new tungsten(VI) alkylidene complex [W(CHSiMe3)(CH2SiMe3)(NPh)-{OCPh2(2-py)}]3 reacts with norbornene (70 °C) to provide selectively the cis-polymer in a ring-opening metathesis polymerization reaction.

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