Opening up closo-cluster chemistry: The first representative of the seven-vertex closo monocarbaborane series, the [closo-2-CB6H7]− ion (see structure), was isolated together with the [closo-1-CB7H8]− ion from simple reactions between nido-1-CB8H12 and Et3N. Both ions exhibit high stability in air and are potentially useful for weakly coordinating anion chemistry.
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Štı́br et al. (2002) studied this question.