Synthesis and crystal structure of 9,10-dihydro-9,10-etheno-1,8-dichloro-11-diphenylphosphinyl-12-(diphenylphosphinylethynyl)anthracene

The title compound, 9,10-dihydro-9,10-etheno-1,8-dichloro-11-diphenylphosphinyl-12-(diphenylphosphinylethynyl)anthracene (1), has been synthesized and its crystal structure has been determined. The compound 1 crystallized into the triclinic space group P-1 with a = 11.881(3) Angstrom, b = 13.769(3) Angstrom, c = 14.034(3) Angstrom, alpha = 74.837(4)degrees, beta = 88.156(4)degrees, gamma = 65.398(4)degrees, V = 2007.1(7) Angstrom(3), Z = 2, D-c = 1.352 g cm(-3). In the crystal structure of la, one chloroform molecule was included by the compound 1 with a 1:1 ratio and the existence of non-classical intermolecular C-H...O hydrogen bonds, intramolecular C-H... Cl and C-H...O hydrogen bonds and pi-pi stacking were observed. (C) 2002 Elsevier Science B.V. All rights reserved.