CRYSTAL AND MOLECULAR-STRUCTURE OF 4-METHOXYCARBONYL METHYL-2,9-BIS(PHENYLSULFONYL)-1,2,3,4-TETRAHYDRO BETA-CARBOLINE-BENZENE SOLVATE

The crystal structure of the title compound has been determined from X -rag diffraction data. The compound crystallizes from benzene in the m onoclinic system, space group P2(1)/a, with unit cell parameters: a = 12.676(2), b = 20.333(3) c = 12.947(2) Angstrom, beta = 113.12(1)degre es, Z = 4, V = 3069.0(8) Angstrom(3). The trial structure was determin ed by direct methods and refined to a final R-index of 0.044. The six- membered heterocyclic ring adopts half-chair conformation. Of the two phenylsulfonyl groups, (N1) is equatorial, while the other (at N2) is axial. The the one substituted at the indole nitrogen (N1) is equatori al, while the other methyl acetate group is approximately perpendicula r to the beta-carboline moiety.