Gtw. Gieling et al., CRYSTAL AND MOLECULAR-STRUCTURE OF 7A,8A-TETRAAZACYCLOPENTA[DEF]FLUORENE-4,8-DITHIONE, Journal of chemical crystallography, 25(7), 1995, pp. 421-424
The title compound C20H18N4O2S2 crystallizes in the monoclinic space g
roup 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 met
hods and refined by full-matrix least-squares to R = 0.04 for 2888 ref
lections and 116 restraints. The title compound has a suitable geometr
y for synthesizing receptor molecules with a cleft for selective compl
exation.