Cis-[RhI(CO)(Ph2PCH2P(S)Ph2)]: a new catalyst for methanol carbonylation

Authors:
  • MBMichael J. Baker
    Michael J. Baker
  • MGMartin F. Giles
    Martin F. Giles
  • AOA. Guy Orpen
    A. Guy Orpen
  • MTMichael J. Taylor
    Michael J. Taylor
  • RWRobert J. Watt
    Robert J. Watt
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Abstract
The complex cis-[[graphic omitted]Ph2)] is eight times more active than the classic Monsanto catalyst [RhI2(CO)2]– for the carbonylation of methanol at 185 °C offering the first promoted system effective under conditions which allow industrially realistic rates; the X-ray crystal structure of the analogue cis-[[graphic omitted]Ph2)] is reported together with in situ spectroscopic evidence for species in the catalytic cycle.