X-ray crystal structure of cis-{(±)-6,6′-[[1,1′-biphenyl]-2,2′-diylbis(oxy)]bis-di benzo[d,f][1,3,2]dioxaphosphepin} diiodoplatinum(II) · dichloromethane

Academic Article

Abstract

  • Bis(dibenzo[d,f][1,3,2]dixoaphosphepin) ligands are extensively used in catalysts for asymmetric alkene hydroformylation; however, few crystal structures of complexes of these ligands have been reported. In this paper, the synthesis and X-ray crystal structure of cis-{(±)-6,6′-[[1,1′-biphenyl]-2,2′-diylbis(oxy)]bis-di benzo[d,f][1,3,2]dioxaphosphepin} diiodoplatinum (II) · dichloromethane are presented. This complex crystallizes in the triclinic space group P1 with a = 12.0842(2,3) b = 12.6993(15) c = 13.2801(18) Å; α = 85.852(10), β = 76.723(13), γ = 72.400(12)°, V = 1890.7(10) Å3 and Z = 4. The diastereomer that has crystallized has an R*R*R*(S*S*S*) configuration. This X-ray crystal structure supports previous observations that bis(phosphite) ligands with bridging groups derived from 2,2′-biphenol can exhibit a wide range of bite angles (>20°).
  • Authors

    Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 10912898
  • Author List

  • Hariharasarma M; Lake CH; Gray GM
  • Start Page

  • 87
  • End Page

  • 91
  • Volume

  • 29
  • Issue

  • 1