192770-10-8Relevant academic research and scientific papers
Nickel(II) isopropylxanthate complexes containing phosphorus donor ligands in the coordination sphere-II
Travnicek, Zdenek,Pastorek, Richard,Sindelar, Zdenek,Kasparek, Frantisek,Marek, Jaromir
, p. 2573 - 2579 (2008/10/09)
Nickel(II) isopropylxanthate complexes, [Ni(Prixa)2(PPh3)], [NiX(Prixa)(TCEP)], [Ni(P-rixa)2(TRIPHOS)] · H2O and [Ni(Prixa)(TRIPHOS)][Ni(Prixa)3] {Pri = i-C3H7, xa = S2CO-, X = Cl- or Br-, PPh3 = triphenylphosphine, TCEP = tris(2-cyanoethyl)phosphine and TRIPHOS = 1,1,1-tris-(diphenylphosphino-methyl)ethane}, have been synthesized. The compounds have been characterized by elemental analysis, magnetochemical and conductivity measurements and IR and electron spectroscopies. The structure of [Ni(Prixa)2(PPh3)] has been determined by single-crystal X-ray diffraction. The nickel atom is four-coordinated by three sulfur atoms from two non-equivalently bonded isopropylxanthato anions and by one phosphorus atom from PPh3 [Ni - S = 2.2282(13), 2.2588(14), and 2.2382(13), respectively, and Ni - P = 2.2023(13) A], in a distorted square-planar geometry. One of the two xanthate ligands is coordinated as a monodentate ligand. The distance between nickel and non-coordinated sulfur atom is 2.816(2) A.
