Crystal engineering with heteroboranes. II. 1,2-Dicarboxy-1,2-dicarba-closo-dodecaborane(12) ethanol hemisolvate.
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.
Venkatasubramanian
Ulaganathan
U
Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS, Scotland. u.venkatasubrimanian@hw.ac.uk
Ellis
David
D
Rosair
Georgina M
GM
Welch
Alan J
AJ