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Updated: Jan 5, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Direct synthesis of an anionic 13-vertex closo-cobaltacarborane cluster
Thomas M Maier1, Peter Coburger2, Nicolaas P van Leest3
1University of Regensburg, Institute of Inorganic Chemistry, 93040 Regensburg, Germany. robert.wolf@ur.de.
Abstract:
Reaction of 1,2-bis(diphenylphosphino)-ortho-carborane (L) with [K(thf){(MesBIAN)Co(η4-cod)}] (1, MesBIAN = bis(mesityliminoace-naphthene)diimine, cod = 1,5-cyclooctadiene) affords an anionic 13-vertex closo-cobaltacarborane cluster (2) in one step. The mechanism of this transformation has been studied by experimental and quantum chemical techniques, which suggest that a series of outer-sphere electron transfer and isomerisation processes occurs. This work shows that low-valent metalate anions are promising reagents for the synthesis of anionic metallacarborane clusters.
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