Crystal structure of 1,1'-bis[1,7-dicarba-closo-dodeca­borane(11)]

In 1,1'-bis[1,7-dicarba-closo-dodeca­borane(11)], the two {1,7-closo-C₂B₁₀H₁₁} cages are linked across a centre of inversion. The position of the second non-linking cage C atom was established unambiguously by geometric and crystallographic methods and there is no evidence of C/B disorder.