Polyhedral Cobaltaboranes. Versatile Replacement of BH Groups by Co(C5H5) Units in Boron Hydride Frameworks. Borane-Metal Cluster Hybrid Molecules.

Abstract

A series of air-stable crystalline cobaltaboranes has been isolated from the reaction of Na B5H8, CoCl2, and Na C5H5 in THF below -20 deg. The major products were red 2-(C5H5) CoB4H8 (an analog of B5H9) and the known orange complex 1,3-cyclohexadienecobalt (II) cyclopentadiene, (C6H8) Co (C5H5). The pyrolysis of 2- (C5H5) CoB4H8 at 200 deg produced yellow 1- (C5H5) CoB4H8, cobalt moving to the apex position. The metal-rich di-, tri-, and tetracobalt systems are viewed as hybrids linking the boron hydride and metal cluster areas. Various aspects of the formation, structures, bonding, and properties of these compounds are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1977
Accession Number
ADA038199

Entities

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  • Richard G. Weiss
  • Russell N. Grimes
  • Vernon R. Miller

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  • University of Virginia

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  • C4I
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