Conformation Of 1-Para-Fluorophenyl-3,5-Bis(Iodomethyl)Piperidine

C13H16FI2N, M(r) = 459.14, monoclinic, P2(1)/n, a = 16.771 (3), b = 8.522 (2), c = 10.782 (2) angstrom, beta = 103.18 (2)-degrees, V = 1500 (1) angstrom 3, Z = 4, D(x) = 2.02 Mg m-3, lambda-(Mo K-alpha) = 0.71069 angstrom, mu = 4.2 mm-1, F(000) = 864, T = 293 K, R = 0.048 for 2377 independent observed reflections. The piperidine ring adopts a chair conformation with the three substituent groups in equatorial positions. The N-C(aryl) bond is inclined at 42.6 (7)-degrees to the C(2)-N(1)-C(6) plane of the piperidine. The torsion angles in the piperidine ring are 53.4-60.2 (6)-degrees, with the largest angles adjacent to N(1) and the smallest adjacent to C(4).