@article {3102,
	title = {ALKYL-FOR-IODIDE METATHESIS INITIATED BY DISSOCIATION OF THE PHOSPHINE LIGAND FROM CPCR(NO)(PPH3)I},
	journal = {Journal of the American Chemical Society},
	volume = {116},
	number = {17},
	year = {1994},
	note = {ISI Document Delivery No.: PD697Times Cited: 6Cited Reference Count: 20},
	month = {Aug},
	pages = {7700-7705},
	type = {Article},
	abstract = {{The alkyl-for-iodide metathesis reaction that occurs when CpCr(NO)(PPh(3))I (1) is treated with 2 equiv of Me(3)SiCH(2)MgCl in THF to form CpCr(NO)(PPh(3))(CH(2)SiMe(3)) (6) has been investigated in some detail. The conversion is initiated by loss of the phosphine ligand from the chromium atom{\textquoteright}s coordination sphere, the most compelling evidence for this step being that addition of excess phosphine (e.g. 4 equiv) to the initial reaction mixture completely inhibits the reaction. Four intermediate complexes which are formed sequentially on the reaction path from 1 to 6 have been detected by IR and ESR spectroscopy. These complexes have been identified as CpCr(NO)(THF)I (2), CpCr-(NO{\textendash}>Mg{CH(2)SiMe(3)})Cl)(THF)I (3), CpCr(NO{\textendash}>Mg{CH(2)SiMe(3)}Cl)(THF)(CH(2)SiMe(3)) (4), and CpCr(NO) (THF)(CH(2)SiMe(3)) (5). Complexes 3 and 4 have also been detected spectroscopically during the reaction of CpCr(NO)(THF)I (2) with Me(3)SiCH(2)MgCl which produces CpCr(NO)(THF)(CH(2)SiMe(3)) (5). This understanding of the mechanistic pathway has resulted in the development of a general synthetic route to previously inaccessible 17-valence-electron CpCr(NO)(L)R complexes (L = C5H11N Or NH(2)CMe(3)},
	keywords = {COMPLEXES, MECHANISM, MO, MOLYBDENUM, ORGANOMETALLIC NITROSYL CHEMISTRY, TUNGSTEN},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1994PD69700029},
	author = {Legzdins,Peter and Shaw, M. J.}
}
