Transition Metal Complexes with Bidentate Ligands Spanning trans-Positions. Part XIII.Preparation, Properties and Crystal and Molecular Structures of Chlorocarbonyl-2,11-bis(diphenylphosphinophenyl)benzophenantreneiridium(I) and Trichlorocarbonyl-2,11-bis(diphenylphosphinomethyl)be...

Article abstract of DOI:10.1002/hlca.19830660823

The complex (1)(4,1=2,11-bis(diphenylphosphinomethyl)benzophenantrene) has been prepared by CuCl2-oxidation of (1)(2a).It is shown that the chlorine oxidation of 2a gives a mixture of products whose composition depends on the reaction conditions.The X-ray crystal structures of 2a and 4 have been determined.The small conformational differences observed for the trans-spanning ligand 1 in the two complexes are likely to be caused by difference in Ir-P bond lengths in square planar 2a and octahedral 4 (2.310(4) and 2.411(3) Angstroem, respectively).