Abstract
(SP-4-4)-chloro[2-(di-tert-butylphosphino)-2-methylpropyl-C,P] (triphenylarsine)palladium(II), C30H41ClPAsPd, has been characterized by single-crystal X-ray diffraction data. It crystallizes in the monoclinic space groupP21 witha=9.611(2),b=14.335(2),C=11.953(1) Å,β=111.97(1)° andZ=2. The phasing model was determined by direct methods and the full-matrix least-squares refinement of 302 structural parameters yielded a reliability factor of 0.039 for 2269 unique reflections withI> 3σ(I). The square planar geometry about the Pd atom is angularly distorted due to the steric bulk of the ligands and the formation of the four-membered ring, Pd-P-C(2)-C(1), which is severely distorted. The arsine and phosphine ligands are orientedtrans across the square-planar geometry with an As-Pd-P angle of 163.5(1)°. Details of the structural content and selected bond lengths and angles are discussed. The phenyl rings are planar and in a staggered orientation. Steric bulk illustrations from “ligand profile” calculations (θ/2 vs φ) about the arsine and phosphine ligands are presented.
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Mullica, D.F., Sappenfield, E.L. & Leschnitzer, D.H. Crystal and molecular structure of chloro(tri-t-butylphosphino-C,P)triphenylarsinepalladium(II). Journal of Crystallographic and Spectroscopic Research 21, 675–679 (1991). https://doi.org/10.1007/BF01179912
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DOI: https://doi.org/10.1007/BF01179912