title: Definitive crystal structure of 1,1'-bis-[1,2-dicarba-closo-dodeca-borane(11)].
abstract: In the title compound, C4H22B20, the two {1,2-closo-C2B10H11} cages are linked across a centre of inversion with a C-C distance of 1.5339 (11) Å. By careful analysis of the structure, it is established that the non-linking cage C atom is equally disordered over cage vertices 2 and 3.
authors.affiliation: Institute of Chemical Sciences, Perkin Building, School of Engineering & Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland.
authors.forename: Wing Y
authors.initials: WY
authors.lastname: Man
authors.affiliation: Institute of Chemical Sciences, Perkin Building, 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, Perkin Building, School of Engineering & Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland.
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Welch
keywords: 1,2-dicarba-closo-dodeca­borane(11); cage compounds; carboranes; crystal structure