663152-99-6Relevant academic research and scientific papers
Insertion Reactions of trans-Mo(dmpe)2(H)(NO) with Imines
Liang, Fupei,Schmalle, Helmut W.,Berke, Heinz
, p. 993 - 999 (2004)
The insertion chemistry of the hydride complex trans-Mo(dmpe) 2(H)(NO) (1) (dmpe = bis(dimethylphosphino)-ethane) with imines has been investigated. It was found that disubstituted aromatic imines RCH= NR′ (R, R′ = Ar) insert into the Mo-H bond of 1, while a series of various mono-and other disubstituted imines do not react. The insertion products trans-Mo(dmpe)2(NO)[NR′(CH2R)] (R = R′ = Ph (2); R = Cp2Fe, R′ = Ph (3); R = Ph, R′ = Cp2Fe (4); R = 1-naphthyl, R′ = Ph (5)) have been isolated and fully characterized by elemental analysis, IR and NMR spectroscopy, and mass spectrometry. The imine PhCH= NC10H7 (C10H 7 = 1-naphthyl) reacted with 1 establishing an equilibrium to produce the nonisolable complex trans-Mo(dmpe)2(NO)[NC 10H7(CH2Ph) (6). The equilibrium constant for this reaction has been derived from VT-NMR measurements, and the ΔH and ΔS values of this reaction were calculated to be -48.8 ± 0.4 kJ·mol-1 and -33 ± 1 J·K-1· mol-1 reflecting a mild exothermic process and its associative nature. Single-crystal X-ray diffraction analyses were carried out on 2-5.
