143733-41-9Relevant academic research and scientific papers
PHOSPHENIUM COMPLEXES OF THE CHROMIUM AND IRON GROUP: NOVEL CYCLOADDITION REACTIONS AND THE CHEMISTRY OF PH-FUNCTIONAL AND CHIRAL DERIVATIVES
Malisch, W.,Hirth, U.,Fried, A.,Pfister, H.
, p. 17 - 20 (2007/10/02)
Synthesis of the highly reactive phosphenium complexes C5R5(CO)2M-P(H)R' (R = H, Me; R' = t-Bu, Mes, s-Mes) (2a - d) is described.The mesityl derivative shows spontaneous dimerization to give the dinuclear species C5R5(CO)2W=P(Mes)-W-(CO)(PH2Mes)C5R5 (6a, b), a new type of phosphinidene complex.An alternative access to these species involves deprotonation and decarbonylation of the bis(metallo)phosphonium salts 2P(Mes)H>BF4 (9a, b).Cycloaddition reaction of the phosphenium complexes Cp(CO)(HPh2P)M=PPh2 (Mo, W) (16a, b) and Cp(CO)Fe=PMes2 (18a, b) respectively with isothiocyanates yields novel fourmembered phosphametallacycles (R' = Et, t-bu) (17a, b, 18a, b).
