Abstract

The crystal structure of the title compound has been determined from X-ray diffractometer data by the heavy-atom method. Crystals ae triclinic, space group P, with a= 1251.0(2), b= 1150.3(2), c= 1011.5(2) pm, α= 117.62(2), β= 101.72(2), γ= 91.90(2)°, and Z= 2. The structure was refined by block-diagonal least-squares to R 0·070 for 1 537 observed reflectionsThe co-ordination geometry about manganese is approximately octahedral, and about silicon and phosphorus tetrahedral. The sillyl and phosphine ligands are mutually trans. Si–Mn [245.3(4) pm] is significantly shorter than expected. The carbonyl groups are displaced 6° out of the equatorial plane towards the silyl ligand.

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