90582-11-9Relevant academic research and scientific papers
Co-ordination Chemistry of Higher Oxidation States. Part 8. Nickel(III) Complexes of Bi- and Multi-dentate Phosphorus and Arsenic Ligands; Crystal and Molecular Structure of .C6H5Me
Gray, Leslie R.,Higgins, Simon J.,Levason, William,Webster, Michael
, p. 459 - 468 (2007/10/02)
The five-co-ordinate nickel(III) complexes have been obtained by Cl2 or NOCl oxidation of in CCl4 or CH2Cl2.The bromides are obtained similarly using Br2-CCl4.On gentle heating, (X = Cl or Br) lose X2 to reform .Unstable X3> have been prepared by halogenation of the dicarbonyl >.The complexes have been characterised by i.r., electronic, and e.s.r. spectroscopy, and by magnetic measurements, and the structure of .C6H5Me established by a single-crystal X-ray study.It is monoclinic, space group P21/n, and has a = 15.567(3), b = 14.627(2), c = 15.151(3) Angstroem, β = 113.38(2) deg, and Z = 4.The structure was refined to R = 0.0562 from 1 583 reflections.The five-co-ordinate nickel is in an approximately square-pyramidal arrangement , and lies above the P2Br2 plane toward the apical bromine.The synthesis and properties of pseudo-octahedral Y are discribed.The compounds mer-X3> have also been obtained, but attempts to prepare nickel(III) complexes with quadridentate phosphines were unsuccessful.
