CRYSTAL STRUCTURE OF BIS(TRIPHENYLPHOSPHINE)BIS(N,N′-DIBUTYLTHIOUREA)SILVER(I) NITRATE
T. Ruffer1, H. Lang1, S. Nawaz2, A.A. Isab3, S. Ahmad2, M.M. Athar4
1 Lehrstuhl für Anorganische Chemie, Institut für Chemie, Technische Universität Chemnitz
2 Department of Chemistry, University of Engineering and Technology
3 Department of Chemistry, King Fahd University of Petroleum and Minerals
4 Institute of Chemistry, University Punjab of the Lahore
saeed_a786@hotmail.com
Keywords: silver(I) complex, N, N?-dibuylthiourea, triphenylphosphine, crystal structure
Pages: 1050-1054
Abstract
A mixed-ligand silver(I) complex of triphenylphosphine and N,N′-dibutylthiourea (Dbtu), [Ag(Ph3P)2(Dbtu)2]NO3, is prepared and its structure in the solid state is determined by X-ray crystallography. X-ray structure of this complex shows that it is mononuclear with the silver atom coordinated by two PPh3 and two dibutylthiourea ligands adopting a distorted tetrahedral geometry. The crystal structure shows the formation of 1-D chains through intermolecular hydrogen bonding interactions between N-H of Dbtu and nitrate ions. The new complex is also characterized by IR and NMR (1H and 31P) spectroscopy. The spectroscopic data are discussed in terms of the nature of bonding. A similar mixed-ligand complex is also prepared for tetramethylthiourea (Tmtu), but the structure of the resulting compound shows that it is a bis(phosphine) complex, [Ag(PPh3)2NO3] rather than a mixed-ligand complex.
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