X-RAY CRYSTAL STRUCTURE OF N-[(5H, 11H-ISOINDOLO [2,1-a]QUINOLINE-5,11-DIONE)-6-YL]IMINOTRIPHENYL PHOSPHORANE

Khalid A. Al-Farhan

Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia (farhank@ksu.edu.sa)

There is a considerable interest in the quinoline derivatives, stemming from their biological activity. As part of our research interest in the quinoline derivatives, the title compound has previously been synthesized. So, the purpose of this communication is to report the crystal structure of the compound and to discuss its structure-property relationships.

X-ray data were collected on Siemens P4 diffractometer using Mo-Kα radiation. The structure was solved by direct methods using SHELXS and refined by full-matrix least squares method on F² using SHELXL97. All the non-H-atoms were refined with anisotropic temperature factors and the H-atoms were constrained to ride on the appropriate carbon atoms at a distance of 0.96 Å with isotropic temperature factor equal to 1.2 U of the atom to which it is attached. Following some relevant crystallographic data:

C34H23N2O2P, Mr 522.5, Triclinic (P-1), a = 9.845(2), b = 10.393(2), c = 13.305(2) Å, α = 90.40(1), b = 91.550(10), γ =103.92(1)º, V = 1320.8(4) ų, Z = 2, Dcalc. = 1.314 g cm^-3, R = 0.041 and wR = 0.097 for 2463 reflections and 352 parameters.