(Terpyridine)palladium(II) complexes of phenylcyanamide ligands
Inorganic Chemistry , Volume 32 - Issue 25 p. 5808- 5812
(Terpyridine)palladium(II) complexes of phenylcyanamide anion ligands have been prepared and characterized by UV-vis, IR, and 1H-NMR spectroscopies. A crystal structure determination of the complex [Pd(terpy)(2,6-Cl2-pcyd)] [PF6] has been performed. The overall geometry of the complex is approximately planar with a dihedral angle of 2.16(16)∘ between the best plane fit of the palladium coordination sphere and that for the phenyl ring of the phenylcyanamide ligand. Crystal structure data for the complex: C22H14N5Cl2PF6Pd, monoclinic crystal system and space group P21/n, with a = 8.185(5) Å, b = 13.606(7) Å, c = 21.163(5) Å,β = 90.50(3)∘, V= 2356.8(20) Å−3, and Z = 4. The structure was refined by using 3233 Mo Kα reflections with I > 2.5σ(I) to an R factor of 0.034. The UV-vis spectra of the complexes showed a broad band centered at approximately 400 nm which has been assigned to a πnb → σ* LMCT transition of the Pd(II)-NCN chromophore.