SYNTHESIS AND CRYSTAL STRUCTURE OF Ni(II) COMPLEX WITH 2-(DIPHENYLPHOSPHINO)BENZALDEHYDE SELENOSEMICARBAZONE
G.A. Bogdanovic1, Anne Spasojevic-de Biré1, I.D. Breski2, V.M. Leovac3 and M.D. Revenko4
1PCM, Ecole Centrale
Paris, 92295 Châtenay-Malabry Cedex, France
2Faculty of Chemistry, University of
Belgrade, P.O. Box 158, 11001 Belgrade, Yugoslavia
3Institute of Chemistry, Faculty of
Sciences, University of Novi Sad, 21000 Novi Sad, Yugoslavia
4Department of Chemistry, State
University of Moldova, 277014 Kishinau, Moldova
Keywords: Nickel(II) complex; Ligand
2-(diphenylphosphino)benzaldehyde selenosemi-carbazone
Synthesis and crystal structure of Ni(II) square-planar complex with 2-(diphenylphosphino)benzaldehyde thiosemicarbazone, having formula [Ni(L)Py]NO3, has been described previously [1]. Now, we wish to present the synthesis and crystal structure of Ni(II) complex with 2-(diphenylphosphino)benzaldehyde selenosemicarbazone whose formula is [Ni(L)NCS]. The compound has been isolated in form of red crystals via reaction of warm methanolic solution of Ni(NO3)2 and ligand in the presence of an excess of NH4NCS.
Crystal data: C21H18N4NiPSSe, triclinic system, space group P1-, a=9.432(1) Ä, b=9.689(1) Ä, c=12.900(1) Ä, a=77.65(1)o, b=77.30(1)o, g=74.57(1)o, V=1093.3(3) Ä3, Mr=527.09, Dc=1.601 g/cm3, F(000)=530, m(MoKa)=2.736 mm-1, l(MoKa)=0.71073 Ä, R=0.0413, Rw=0.1000. The intensities were collected on a CAD-4 diffractometer with w/2q scaning technique. The structure was solved by Patterson methods using SHELXS86 and refined by SHELXL93 on the basis of 2391 observed reflections (I>2s1) for 262 refined parameters.
The Ni atom has distorted square-planar coordination geometry
(Fig. 1). The greatest deviation is shown by the P atom, which
deviates from the least-squares plane through Ni, N1, Se and N4
by 0.486(4) A. The six membered chelate ring containing the P
atom has nonplanar conformation.
1. V.M. Leovac, B. Ribár, Gy. Argay, A. Kálmán, I. Breski: J. Coord. Chem., 39 (1996) 11-19.
Fig. 1