X-ray crystal structures of cis-bis(diphenylphosphinamide)tetracarbonylmolybdenum(0) and trans-bis(N-methyl diphenylphosphinamide)tetracarbonylmolybdenum(0)

Academic Article


  • The X-ray crystal structures of cis-Mo(CO) (Ph PNH ) , I, and trans-Mo(CO) (Ph PNHMe) , II, are presented. Complex I crystallizes in the monoclinic space group P2 /c(a=13.433(1), b=12.2719(8), c=17.318(2)Å;β=109.79(1)°;V=2686.1(8)Å ;Z=4). Complex II crystallizes in the triclinic space group P-1 (a=6.9986(8), b=10.328(1), c=11.241(2)Å, α=107.58(1)°, β=91.76(1)°, γ=101.28(1)°, V=756.1(4)Å , Z=1). The molybdenum coordination geometry in each complex is a slightly distorted octahedron. The molybdenum-carbon bond lengths for the carbonyls trans to phosphorus in complex I are shorter than those the carbonyls trans to other carbonyls. The average molybdenum-phosphorus distance in I (2.525(5)Å) is similar to those in other diphenylphosphinamide complexes and longer than the molybdenum-phosphorus distance in II in 2.4585(7)Å). The distance between two nitrogen atoms in cis Mo(CO) (Ph PNH ) (3.74(3)Å) is significantly larger than the sum of their van der Waals radii (3.10 Å) indicating that the two nitrogens are not hydrogen bonded. © 1993 Plenum Publishing Corporation. 4 2 2 2 4 2 2 1 4 2 2 2 3 3
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    Digital Object Identifier (doi)

    Author List

  • Gray GM; Zhang Y
  • Start Page

  • 711
  • End Page

  • 717
  • Volume

  • 23
  • Issue

  • 9