Accession Number : ADA019419

Title :   Cobalt-Boron Clusters.

Descriptive Note : Technical rept.,

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE DEPT OF CHEMISTRY

Personal Author(s) : Miller,Vernon R. ; Grimes,Russell N.

Report Date : JAN 1976

Pagination or Media Count : 15

Abstract : The novel compounds (eta-C5H5)3C03B3H5 (I), (eta-C5H5)3C053B4H4 (II), and (eta-C5h5)4C04B4H4 (III) have been isolated as air-stable crystalline solids from the reaction of Na(+)B5H8(-) with CoCl1 and NaC5H5 below 20 degrees, and characterized from mass spectra and NMR spectra. The proposed structures of I, II, and III are respectively octahedral, capped octahedral, and dodecahedral. Compounds I and III are the first metalloboron species to have as many metal as boron atoms in the cage, III is the first tetrametallic metalloborane, and II is the only polyhedral boron cage molecule having a boron isolated from other boron atoms. The three compounds are closely related electronically and structurally to both the metal clusters and the boranes, and may be regarded as hybrids of the two classes.

Descriptors :   *Carboranes, *Metalorganic compounds, *Cobalt compounds, *Boron compounds, Nuclear magnetic resonance, Mass spectroscopy, Clustering, Chemical properties, Physical properties

Subject Categories : Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE