CRYSTAL AND MOLECULAR-STRUCTURE OF DIHYDRO-8(B),8(C)-DIPHENYL-1H,3H,4H,5H,7H,8H,-2,6-DIOXA-3A,4A,7A,8A-TETRAAZACYCLOPENTA[DEF]FLUORENE-4,8-DITHIONE
GIELING GTW, NOLTE RJM, SCHEEREN JW, SMITS JMM, BEURSKENS PT, BEURSKENS G
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY 25 (7): 421-424 JUL 1995

Abstract:
The title compound C20H18N4O2S2 crystallizes in the monoclinic space group P2(1)/n with a = 8.4930(1) Angstrom, b = 11.4880(1) Angstrom, c = 20.0709(2) Angstrom, beta = 94.933(1)degrees, V = 1951.01(3) Angstrom(3), Z = 4. The crystal structure has been solved by vector search methods and refined by full-matrix least-squares to R = 0.04 for 2888 reflections and 116 restraints. The title compound has a suitable geometry for synthesizing receptor molecules with a cleft for selective complexation.