STRUCTURE OF PENTACARBONYL(MORPHOLINE-KAPPA-N)CHROMIUM(0)

Abstract

[Cr(CO)5(C4H9NO)], M(r) = 279.2, monoclinic, P2(1)/c, a = 9.391 (7), b = 10.946 (7), c = 12.259 (9) angstrom, beta = 108.14 (5)degrees, V = 1197.6 (2) angstrom 3, Z = 4, D(x) = 1.55 g cm-3, lambda(Cu K-alpha) = 1.5418 angstrom, mu = 81.71 cm-1, F(000) = 568, room temperature, R = 0.039 for 1332 reflections with I greater-than-or-equal-to 3-sigma(I). The metal atom is coordinated to the morpholine ligand via the N atom and to five CO ligands in a slightly distorted octahedral arrangement with bond lengths Cr-C(cis, mean) = 1.899 (5), Cr-C(trans) = 1.819 (6), Cr-N = 2.197 (4) angstrom. There are no unusual features in the morpholine ligand.