title: Synthesis, spectroscopic studies and electrochemistry of palladium (II) macrocyclic complexes derived from a new tetraazahalogen substituted ligands by template method and their antimicrobial and pesticidal activities.
abstract: A new series of Pd(II) macrocyclic complexes have been synthesized by template condensation of bis(benzil)4-chloro 1,2-phenylenediamine (ML1) and bis(benzil)4-fluro 1,2-phenylenediamine (ML2) respectively, with appropriate diamine i.e. 1,2-phenylenediamine, 4-chloro 1,2-phenylenediamine and 4-fluro 1,2-phenylenediamine in the presence of PdCl2 to form complexes of the type [Pd(C40H26N4ClF)]Cl2, [Pd(C40H27N4X)]Cl2 and [Pd(C40H26N4X2)]Cl2, where X=Cl, F. The complexes have been characterized with the help of elemental analysis, IR, 1H NMR, electronic spectra, conductance measurement, magnetic susceptibility, cyclic voltammetry and X-ray powder diffraction studies. On the basis of these studies a square planar geometry has been proposed around the metal ion. The newly synthesized ligands and their complexes have been screened for antimicrobial and pesticidal activities. The results obtained from bioassays indicate that this class of compounds can be utilized for the design of new substance with pesticidal activity and promising antimicrobial activity.
authors.affiliation: Department of Chemistry, University of Rajasthan, Jaipur 302004, India. iffatmasih@gmail.com
authors.forename: Iffat
authors.initials: I
authors.lastname: Masih
authors.forename: Nighat
authors.initials: N
authors.lastname: Fahmi
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D004563:Electrochemistry; D047028:Macrocyclic Compounds / Q000138:chemical synthesis* / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D010165:Palladium / Q000737:chemistry*; D010575:Pesticides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D047028:Macrocyclic Compounds; D010575:Pesticides; D010165:Palladium