title: Crystal structure of 1,1'-bis[1,7-dicarba-closo-dodeca-borane(11)].
abstract: In the title compound, C4H22B20, the two {1,7-closo-C2B10H11} cages are linked across a centre of inversion, with C-C = 1.5401 (16) Å. 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.
authors.affiliation: Institute of Chemical Sciences, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland.
authors.forename: Lisa
authors.initials: L
authors.lastname: Elrick
authors.affiliation: Institute of Chemical Sciences, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland.
authors.forename: Georgina M
authors.initials: GM
authors.lastname: Rosair
authors.affiliation: Institute of Chemical Sciences, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland.
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Welch
keywords: carboranes; closo-dodeca­borane(11); crystal structure