33085-24-4

Upstream product

• 65255-15-4 Na⁽¹⁺⁾*(C₅H₅)W(CO)2(P(C₆H₅)3)^(1-)=Na(C₅H₅)W(CO)2(P(C₆H₅)3) 
• 537691-23-9 C₅H₅(CO)2W((C₆H₅)3P)CH₂Si(CH₃)2H 

Downstream Products

• 177094-89-2 (C₅H₅)W(CO)2(P(C₆H₅)3)(H)2⁽¹⁺⁾*B(C₆H₃(CF₃)2)4^(1-)=[(C₅H₅)W(CO)2(P(C₆H₅)3)(H)2][B(C₆H₃(CF₃)2)4] 
• 87102-02-1 trans-(η5-C5H5)(CO)2PPh3W[σ-CH=CHCN] 
• 953088-98-7 CpW(CO)2(PPh₃)(1,3-bis(2,4,6-trimethylphenyl)imidazolium) 

Relevant academic research and scientific papers

Tungstenmethyl-dimethylsilanols Cp(OC)2(R3P)W-CH2-SiMe2OH (R = Me, Ph) - Synthesis via oxygenation or hydrolysis

The tungstenmethyl-dimethylsilanols Cp(OC)2(R3P)W-CH2-SiMe2OH [R = Me (6a), Ph (6b)] have been synthesized by oxofunctionalization of the tungstenmethyl-silanes Cp(OC)2(R3P)W-CH2-SiMe2H [R = Me (3a), Ph (3b)] with dimethyldioxirane. 6a has been additionally obtained by Et3N-assisted hydrolysis of the tungstenmethyl-chlorosilane Cp(OC)2(Me3P)W-CH2-SiMe2Cl (5). Compounds 6a,b are stable with respect to self-condensation, but controlled condensation of 6a with Me2Si(H)Cl in the presence of triethylamine has been realized to give the tungstenmethyl-substituted disiloxane Cp(OC)2(Me3P)W-CH2-SiMe2O-SiMe 2H (7). The new compounds have been identified IR- and NMR-spectroscopically and, in the case of 3a, by X-ray analysis.

Photochemical Reduction of CpW(CO)3CH3 (Cp = η5-C5H5) to CpW(CO)3(1-); An Isolobal Analogy to the Disproportionation of Cp2Mo2(CO)6

Irradiation (λ > 380 nm) of CpW(CO)3Me in inert solvents in the presence of PPh3 gives as well as the substitution product CpW(CO)2(PPh3)Me (Φ disappearance CpW(CO)3Me = 0.45 +/- 0.005, Φ apparance CpW(CO)3(1-) = 0.04 +/- 0.01).The mechanism of CpW(CO)3(1-) formation was studied.Experiments suggest that CpW(CO)2(PPh3)Me may be an intermediate in the reaction but direct reductive elimination of PPh3Me(1+) from this species or from CpW(CO)(PPh3)2Me was ruled out.Experiments using PTol3 demonstrated that PAr3Me(1+) (Ar = aryl) is formed from exogenous, not coordinated, phosphine.The mechanism proposed for the reduction of CpW(CO)3Me involves the intermediate formation of phosphoranyl radicals, .PPh3Me, formed by addition of Me radicals (from W-CH3 homolysis) to PPh3.Phosphoranyl reduction of a variety of metal species which are present in solution is shown to lead to CpW(CO)3(1-).The proposed mechanism is isolobal with a mechanism we proposed for the photochemical disproportionation of metal-metal bonded dimers (e.g., Cp2Mo2(CO)6) involving 19-valence-electron intermediates.