1304142-16-2Relevant academic research and scientific papers
Synthesis and isocyanate insertion reactions of tungsten(IV) imido complexes formed from W(CO)(acac)(N3)(PMe3)3 with azide as the oxidant
Khosla, Chetna,Jackson, Andrew B.,White, Peter S.,Templeton, Joseph L.
, p. 19 - 31 (2011)
Addition of excess trimethylphosphine and a halide source to a solution of W(CO)(acac)2(η2-L) (L = NCPh and OCMe2) leads to displacement of L and one acetylacetonate chelate to produce electron-rich, seven-coordinate complexes of the formula W(CO)(acac)(X)(PMe 3)3 (X = Cl, Br, and I). Use of NaN3 instead of a halide source leads primarily to loss of carbon monoxide and dinitrogen, and protonation from adventitious water yields the cationic imido complex [W(NH)(acac)(PMe3)3]+. Heating [W(NH)(acac)(PMe3)3]+ in aromatic isocyanates at high temperature results in isocyanate insertion into the NH imido bond to form new C-N bonds. An alternate route to related imido complexes involves heating [W(O)(acac)(PMe3)3]+ with phenyl isocyanate at high temperatures to yield the substituted imido complex [W(NPh)(acac)(PMe3)3]+.
