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[1,1,2,2-]

Londesborough1, Bould, Holub

  • 1School of Chemistry, The University of Leeds, Leeds LS2 9JT, England.

Acta Crystallographica. Section C, Crystal Structure Communications
|December 19, 2000
PubMed
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This study details a novel cobaltadodecaborane cluster with a closo 12-vertex structure. The compound features dimethylsulfido ligands and shows structural parallels to its diethylsulfido analog, advancing organometallic chemistry research.

Area of Science:

  • Organometallic Chemistry
  • Boron Cluster Chemistry
  • Coordination Chemistry

Background:

  • Organoborane compounds are crucial in various chemical applications.
  • Cobalt-containing clusters offer unique electronic and structural properties.
  • Understanding ligand effects on cluster stability and reactivity is essential.

Purpose of the Study:

  • To synthesize and characterize a new cobaltadodecaborane derivative.
  • To investigate the structural features and bonding in the title compound.
  • To compare the structure with related organosulfur-ligated cobalt clusters.

Main Methods:

  • Synthesis of the title compound, 1,1,2,2-tetracarbonyl-1,2-&mgr;-carbonyl-4, 11-dimethylsulfido-closo-1,2-dicobaltadodecaborane.
  • X-ray crystallography for structural determination.

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  • Spectroscopic analysis for characterization.

    • Main Results:

    • The compound exhibits a closo 12-vertex 1,2-Co(2)B(10)H(8) core structure.
    • Dimethylsulfido ligands are coordinated at the exo-4- and 11-positions.
    • The determined structure closely resembles that of the previously reported diethylsulfido analogue.

    Conclusions:

    • The successful synthesis and characterization of the dimethylsulfido cobaltadodecaborane expand the library of organoboron clusters.
    • Structural data confirms the influence of sulfur-containing ligands on the cobaltadodecaborane framework.
    • The observed similarity to the SEt(2) analogue suggests predictable structural behavior with related thioether ligands.