@article {5196,
	title = {The elusive 16-electron Cp*M(NO)Me-2 (M = Mo, W) complexes and their spontaneous conversions to Cp*M(NMe)(O)Me isomers},
	journal = {Journal of the American Chemical Society},
	volume = {123},
	number = {26},
	year = {2001},
	note = {ISI Document Delivery No.: 447QPTimes Cited: 17Cited Reference Count: 115},
	month = {Jul},
	pages = {6272-6282},
	type = {Review},
	abstract = {Treatment of [Cp*Mo(NO)Cl mu(-Cl)](2) with magnesium (Me2Mg.dioxane, MeMgCl) or aluminum (Me3Al) methylating reagents affords the known compound [Cp*Mo(NO)Me(mu 0Cl)](2) (1). Similar treatment of the dicbloro precursor with MeLi in ethereal solvents generates an equimolar mixture of 1 and the trimethyl "ate" complex, Cp*MoMe3(NO-Li(OEt2)(n)). (2-Et2O). Reaction of 2-Et2O with a source of [Me](+) forms Cp*MoMe3(dropN-OMe) (3), a rare terminal alkoxylimido complex. Metathesis of the chloro ligands of [Cp*Mo-(NO)Cl(mu -Cl)](2) by MeLi in toluene at low temperatures produces the target dimethyl complex. Cp*Mo(NO)-Me-2 (4). in 75\% isolated yield. In solution, 4 is predominantly a monomeric species, whereas in the solid state it adopts a dimeric or oligomeric structure containing isonitrosyl bridges as indicated by IR and N-15/C-13 NMR spectroscopies. Hydrolysis of 4 affords meso- and rac-[Cp*Mo(NO)Me](2)(mu -O)(5), and the reactions of 4 with a range of Lewis bases. L, to form the 18e adducts Cp*Mo(NO)(L)Me-2 (e.g., Cp*Mo(NO)(PMe3)Me-2 (7)), have established it to be the most electrophilic complex of its family. Acidolysis of the methyl groups of 4 is also facile. Most notably, 4 is thermally unstable in solution and undergoes isomerization via nitrosyl N-O bond cleavage to its oxo(imido) form, Cp*Mo(NMe)(O)Me (11), which is isolable from the final reaction mixture as the mu -oxo-bridged adduct formed by 4 and 11, i.e., Cp*Mo(NO)Me2(mu -O)Cp*Mo(NMe)Me (4 <{\textendash} 11). The rate of this isomerization is significantly faster for the tungsten dimethyl complex; hence, Cp*W(NO)- (NO)Me-2 (12) is not isolable free of a supporting donor interaction and can only be isolated as Cp*W(NO)-Me-2(mu -O)Cp*W(NMe)Me (12 <{\textendash} 13) or Cp*W(NO)Me-2(PMe3) (14) adducts.},
	keywords = {ALPHA-OLEFINS, COORDINATED NITRIC-OXIDE, CRYSTAL-STRUCTURE, EFFECTIVE CORE POTENTIALS, INSERTION, LIGAND REDISTRIBUTION REACTIONS, MIGRATORY, MOLECULAR CALCULATIONS, OLEFIN POLYMERIZATION, ORGANOMETALLIC NITROSYL CHEMISTRY, POLYMERIZATION CATALYSTS},
	isbn = {0002-7863},
	url = {<Go to ISI>://000169584200009},
	author = {Sharp, W. B. and Daff, P. J. and McNeil, W. S. and Legzdins,Peter}
}
@article {4542,
	title = {Reactivity studies of the zirconium alkylidene complexes [eta(5)-C5H3-1,3-(SiMe2CH2PPr2i)(2)]Zr=CHR(Cl) (R = Ph, SiMe3)},
	journal = {Journal of the American Chemical Society},
	volume = {121},
	number = {8},
	year = {1999},
	note = {ISI Document Delivery No.: 174BPTimes Cited: 25Cited Reference Count: 58},
	month = {Mar},
	pages = {1707-1716},
	type = {Article},
	abstract = {{Reactivity studies of the zirconium alkylidene complexes [P2Cp]Zr=CHR(CI) (1a},
	keywords = {ALPHA-OLEFINS, CARBON-MONOXIDE, CHEMISTRY, COMPLEXES, KETENE COMPLEXES, METAL KETENIMINE, tantalum, TITANOCENE, TRANSITION-METAL, X-ray structure, ZIRCONOCENE-ALKENE COMPLEXES},
	isbn = {0002-7863},
	url = {<Go to ISI>://000079014500011},
	author = {Fryzuk,Michael D. and Duval, P. B. and Mao, Sssh and Rettig, S. J. and Zaworotko, M. J. and Macgillivray, L. R.}
}
