Boranametallacarboranes. 1. Synthesis and Characterization of (Borane) Cobalt (Carborane) Sandwich Complexes

Abstract

The first known examples of borane-metal-carborane sandwich complexes, in which a metal atom simultaneously occupies vertices in a metallaborane and a metallacarborane framework, have been obtained from reactions of B5H8- or B9H14- ions with CoCl2 in THF, followed by addition of R2C2B4H5- ion (R = CH3 or C2H5). With B5H8- and (C2H5)2C2B4H5-, the characterized products are (2,3-(C2H5)2C2B4H4)-2-Co-(B5H10) (I), (2,3-(C2H5) 2C2B4H4)-5-Co(B9H12-1-0(CH2)4) (II), and (2,3-(C2H5)2C2B3H5)-5-Co(B9H12-1-0(CH2) 4) (III). With B9H14- as the borane reagent, the products are (2,3-(C2H5) 2C2B3H5)-6-Co-(B9H12-2-0(CH2)4) (IV) and (1,2-(C2H5)2C2B7H7)-6Co-(B9H12-2- 0(CH2)4) (V), as well as traces of I, II, and III. Except for I, an orange oil, all products are crystalline solids.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1981
Accession Number
ADA109384

Entities

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  • Lester Borodinsky
  • Russell N. Grimes

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  • University of Virginia

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  • C4I

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  • Alkynes
  • Anhydrides
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