Reactions of (iPrO)_3MM(O~iPr)_3 (M = Mo, W) with low-coordinate phosphorus compounds. Formation of the first four-membered planar metallacycles, containing an MM triple bond

摘要

The low-coordinate phosphorus compounds (Me_3Si)_ 2N-PNSiMe_3, (Me_3Si)_2N-P(S)N tBu and (Me_3Si)_2N-P(NSiMe_3) _2 react with (iPrO)_3MM(O~iPr) _3 (M = Mo, W) to form four- and five-membered metallacycles with intact endocyclic or exocyclic MM triple bonds. The first four-membered planar metallacycles, containing an MM triple bond were obtained in reaction with (Me_3Si)_2N-PNSiMe_3.