Syntheses, crystal structures and photoluminescent properties of new heteroleptic Ni(II) and Pd(II) complexes of ferrocene functionalized dithiocarbamate-and dipyrromethene ligands

Two new heteroleptic complexes. [Ni(Fcdpm)(Fcdtc)] 1 and [Pd(Fcdpm)(Fcdtc)] 2 (Fcdpm = 5-Ferrocenyl dipyrromethene, Fcdtc = N-benzyl-N-ferrocenylmethyl dithiocarbamate) have been prepared by the reaction of precursor homoleptic complexes [M(Fcdtc)(2)] (M = Ni(II), Pd(II)) and the ligand Fcdpm and characterized by elemental analysis, IR, H-1 and C-13 NMR and UV-vis. spectroscopy. Their structures have been elucidated by X-ray crystallography. In both complexes. 1 and 2 the central metal lies at the center of a distorted square plane chelated by nitrogen atoms of the Fcdpm and sulfur atoms of the Fcdtc ligands. In both complexes the structures are stabilized via C-H center dot center dot center dot S and CH center dot center dot center dot pi secondary interactions resulting in 1D supramolecular motifs. The palladium complex 2 shows luminescent emission in solution. (C) 2013 Elsevier B.V. All rights reserved.