Aryldiazo Complexes. Structure of a Hydrido-Aryldiazo Complex of Osmium, OsH(CO)(N2C6H5) (P(C6H5)3)2CH2•Cl2

Martin Cowie, Barry L. Haymore, James A Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


The structure of OsH(CO)(N2C6H5) (P(C6H5)3)2• CH2Cl2 has been determined crystallographically and consists of discrete molecules of the aryldiazo complex and solvent. This complex of Os(0) is five-coordinate and has a distorted trigonal-bipyramidal coordination geometry about the osmium atom. Owing to the reduced steric requirements of the hydrido ligand, the P(1)-Os-P(2) and N(1)- Os-C(1) angles change from the respective idealized values of 180 and 120° to 164.37 (6) and 138.0 (3)° indicating a distortion toward a quasi tetrahedral geometry. The singly bent, phenyldiazo ligand occupies an equatorial coordination site and possesses an unusually long osmium-nitrogen bond length with Os-N = 1.867 (6) Å, N-N = 1.211 (8) Å, N-C = 1.460 (10) Å, Os-N-N = 171.1 (6)°, and N-N-C = 118.5(7)°. The compound crystallizes from dichloromethane as solvated crystals in space group Ci1-P1 of the triclinic system with a = 13.440 (2) Å, b = 13.481 (1) Å, c = 12.528 (2) Å,α=114.30 (1)°, β = 101.82 (1)°, γ = 81.43 (1)°, and Z = 2. Based upon 5340 unique reflections with Fo2> 3σ(Fo2) the structural data were refined by full-matrix, least-squares methods to R = 0.046 and Rw = 0.057.

Original languageEnglish (US)
Pages (from-to)2617-2623
Number of pages7
JournalInorganic Chemistry
Issue number11
StatePublished - Nov 1 1975

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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