title: Crystal structure of 1-butyl-2,3-di-methyl-imidazolium dicarba-7,8-nido-undeca-borate.
abstract: In the title mol-ecular salt, C9H17N2 (+)·C2H12B9 (-), the carborane cage has a bridging B-H-B bond on the open B3C2 face. The butyl side chain of the cation adopts an extended conformation [C-C-C-C = 179.6 (1)°]. In the crystal, the imidazolium ring is almost coplanar with the open face of the carborane anion. The cations stack in the [010] direction and the dihedral angle between the imidazolium rings of adjacent cations is 68.45 (6)°. The butyl chains extend into the space between carborane anions.
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Klemes
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: L
authors.initials: L
authors.lastname: Soderstrom
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Hunting
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: A S
authors.initials: AS
authors.lastname: Larsen
keywords: bridging B—H—B bond; carborane cage anion; crystal structure; imidazolium cation
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