Molybdenum carbonyl complexes of diphenylphosphinous acid and diphenylphosphinous acid derivatives. Crystal and molecular structures of...

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Abstract

  • Title full: Molybdenum carbonyl complexes of diphenylphosphinous acid and diphenylphosphinous acid derivatives. Crystal and molecular structures of [Et4N][Mo(CO)4(PPh2O)2H] ·0.37 CH2Cl2, Mo(CO)4(PPh2OH)(PPh2OCH2 CH2NMe2)·H2O and Mo(CO)4(PPh2SPPh2). Crystal and molecular structures for the three complexes [Et4N][Mo(CO)4(PPh2O)2H] ·0.37CH2Cl2 (1), [Mo(CO)4(PPh2OH)(PPh2OCH2 CH2NMe2]·H2O (2) and [Mo(CO)4(PPh2SPPh2] (3) are reported. The octahedral coordination sphere at molybdenum consists of four carbonyl groups and two cis oriented phosphorus donor ligands. The unlocated hydrogen atom in 1 forms a strong hydrogen bridge between the two Ph2PO- ligands as evidence by a short OO distance of 2.415(4) Å. In complex 2, the acidic proton of the PPh2OH ligand forms a strong hydrogen bond to the tertiary amine with a NO distance of 2.77 Å. Complex 3 has essentially C2v symmetry; the PSP bond angle is 86.9°. The PMP angles are 88.06(4)°, 86.36(7)° and 72.02(7)° for 1, 2 and 3, respectively. The average MC distance over all these compounds is 2.010(6) Å; the MP distances range from 2.487(2) to 2.563(2) Å and average to 2.51(1) Å. Compound 1 crystallizes in space group P1 with a = 12.456(2) Å, b = 13.757(3) Å, c = 11.892(3) Å, α = 95.51(2)° β = 108.30(2)°, γ = 91.91(1)°, V = 1922(2) Å3, Z = 2. Compound 2 crystallizes in space group Pbca with a = 20.901(3) Å, b = 16.032(3) Å, c = 19.686(5) Å, V = 6597(2) Å3, Z = 8. Compound 3 crytallizes in space group P212121 with a = 11.014(1) Å, b = 14.244(2) Å, c = 17.233(1) Å, V = 27041(1) Å3, Z = 4. © 1984.
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    Author List

  • Cotton FA; Falvello LR; Tomas M; Gray GM; Kraihanzel CS
  • Start Page

  • 129
  • End Page

  • 139
  • Volume

  • 82
  • Issue

  • 2