Stereochemistry of mixed thiolate and ditertiary phosphine cobalt(II) complexes. Crystal structures of [Co{Ph2P(CH2)3PPh2}(SPh)2] and [Co{Ph2PCH2CH2P(Ph)CH2CH2PPh2}(SPh)2]
摘要:
The complexes [Co(dppp) (SPh)2] [dppp = 1,3-bis(diphenylphosphino)propane] and [Co(bdpp)-(SPh)2] [bdpp = bis(2-diphenylphosphinoethyl)phenylphosphine] were prepared in good yields by treating Co(dppp) Cl2 with NaSPh and elemental selenium in dimethylformamide and by treating CoCl2.6H2O and bdpp in acetonitrile with NaSPh, respectively. The complex [Co(dppp) (SPh)2] crystallizes in the triclinic space group P1BAR, with a = 9.665(2), b = 10.75(1), c = 18.288(2) angstrom, alpha = 102.41 (1), beta = 93.89(1), gamma = 92.40(1)-degrees and Z = 2, whereas the complex [Co(bdpp) (SPh)2] is monoclinic, space group Cc, with a = 16.374(2), b = 26.033(3), c = 10.873(5) angstrom, beta = 117.49(2)-degrees and Z = 4.