@article {2777,
	title = {SYNTHESIS AND CHARACTERIZATION OF THE ASYMMETRIC COMPLEXES CP-ASTERISK-W(NO)(R)(R{\textquoteright}) [R, R{\textquoteright} = ALKYL, ARYL] AND REGIOSELECTIVE INSERTIONS OF CO INTO THEIR W-C SIGMA-BONDS},
	journal = {Organometallics},
	volume = {12},
	number = {6},
	year = {1993},
	note = {ISI Document Delivery No.: LG158Times Cited: 35Cited Reference Count: 37},
	month = {Jun},
	pages = {2094-2102},
	type = {Article},
	abstract = {{Treatment of Cp*W(NO)(Cl)2 (CP* = eta5-C5Me5) with 0.5 equiv of a R2Mg.X(dioxane) reagent (R = CH2CMe3, CH2SiMe3, Ph, o-tolyl) results in the formation of the alkyl and aryl chloro complexes Cp*W(NO)(R)(CI), which have been isolated and fully characterized. Metathesis of these complexes with 0.5 equiv of another R{\textquoteright}2Mg.x (dioxane) reagent (R{\textquoteright} = CH2CMe3, CH2SiMe3, Me, Ph, o-tolyl) affords a series of 16-electron, mixed alkyl and aryl complexes,; Cp*W-(NO)(R)(R{\textquoteright}), having all ten combinations of R not-equal R{\textquoteright}. These complexes have been characterized by conventional spectroscopic methods. The competitive reactivity of the different tungsten-carbon sigma bonds in these species toward CO insertion has been investigated. Each complex reacts with 1 equiv of CO under ambient conditions to produce the corresponding eta2-acyl complex presumably via an initial carbonyl adduct. An X-ray diffraction analysis of Cp*W(NO)(Ph)-eta2-C{O}CH2CMe3) has been performed to confirm the existence of the eta2-acyl linkage in one of these complexes: space group P2(1)/n},
	keywords = {CARBON-MONOXIDE INSERTION, CARBONYLATION, CHEMISTRY},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1993LG15800020},
	author = {Debad, J. D. and Legzdins,Peter and Batchelor, R. J. and Einstein, F. W. B.}
}
