title: Synthesis, thermal and spectral studies of first-row transition metal complexes with Girard P reagent-based ligand.
abstract: A new series of first-row transition metal complexes with 1-acetylpyridinium chloride-4-benzoyl thiosemicarbazide (H2GPBzIT) have been prepared and characterized by elemental analysis, spectroscopic and magnetic measurements. The proton-ligand ionization constants were determined potentiometrically using Irving-Rossotti technique. The stability constants of complexes were also calculated and were found in agreement with the sequence of stability constants of Irving and Williams. Thermal stability and degradation kinetics have been measured using thermogravimetric analyzer. Kinetic parameters were obtained for each stage of thermal degradation of complexes using Coats-Redfern method.
authors.affiliation: Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt. usama@mans.edu.eg
authors.forename: Usama
authors.initials: U
authors.lastname: El-Ayaan
authors.forename: I M
authors.initials: IM
authors.lastname: Kenawy
authors.forename: Y G Abu
authors.initials: YG
authors.lastname: El-Reash
mesh_terms: D001622:Betaine / Q000031:analogs & derivatives / Q000737:chemistry; D004355:Drug Stability; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D011199:Potentiometry; D012663:Semicarbazides / Q000138:chemical synthesis / Q000737:chemistry; D013053:Spectrophotometry; D013816:Thermodynamics; D013818:Thermogravimetry; D028561:Transition Elements / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D012663:Semicarbazides; D028561:Transition Elements; D001622:Betaine; C012332:Girard's reagent T