title: Crystal engineering with heteroboranes. II. 1,2-Dicarboxy-1,2-dicarba-closo-dodecaborane(12) ethanol hemisolvate.
abstract: The title compound, 1,2-(COOH)(2)-1,2-closo-C(2)B(10)H(10).0.5C(2)H(6)O or C(4)H(12)B(10)O(4).0.5C(2)H(6)O, forms a tetramer by incorporating ethanol (solvent) molecules through hydrogen bonding. Two eight-membered rings [graph set R(2)(2)(8)] are formed by hydrogen bonding between two carboxylic acid groups, whereas two ten-membered rings [R(3)(3)(10)] are formed by hydrogen bonding between two carboxylic acid groups and the OH group of an ethanol molecule (solvent). Two crystallographically independent tetramers are present in the crystal structure.
authors.affiliation: Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS, Scotland. u.venkatasubrimanian@hw.ac.uk
authors.forename: Ulaganathan
authors.initials: U
authors.lastname: Venkatasubramanian
authors.forename: David
authors.initials: D
authors.lastname: Ellis
authors.forename: Georgina M
authors.initials: GM
authors.lastname: Rosair
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Welch