title: Synthesis, characterization, thermal and antioxidant studies of potassium dihydrobisphenothiazinyl borate and its transition metal complexes.
abstract: The bidentate borate anion H(2)B(ptz)(2)(-) and its transition metal complexes have been synthesized and characterized by elemental analyses, magnetic susceptibility, electronic, IR, (1)H and (13)C NMR data. The molar conductance of 10(-3) M solution for all the complexes supports their non-ionic nature. The TGA profile of borate anion shows a single stage unlike that of two stage decomposition plot of the metal complexes. On the basis of spectroscopic studies the geometry of all the complexes have been proposed to be distorted-tetrahedral. The in vitro antioxidant and lipid oxidation inhibition of the ligand and its complexes have also been studied. The Cu[B(ptz)(2)](2) complex was found to be most effective in all the studies.
authors.affiliation: Department of Kulliyat, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh 202002, India. saanchem@yahoo.co.in
authors.forename: Shahab A A
authors.initials: SA
authors.lastname: Nami
authors.forename: Mahboob
authors.initials: M
authors.lastname: Alam
authors.forename: Ahmad
authors.initials: A
authors.lastname: Husain
authors.forename: Mehtab
authors.initials: M
authors.lastname: Parveen
mesh_terms: D000975:Antioxidants / Q000494:pharmacology*; D001881:Borates / Q000138:chemical synthesis* / Q000494:pharmacology*; D001896:Boron Compounds / Q000138:chemical synthesis* / Q000494:pharmacology*; D002152:Calorimetry, Differential Scanning; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D004553:Electric Conductivity; D004583:Electrons; D008024:Ligands; D008055:Lipids / Q000737:chemistry; D060328:Magnetic Phenomena; D009682:Magnetic Resonance Spectroscopy; D010084:Oxidation-Reduction / Q000187:drug effects; D010640:Phenothiazines / Q000138:chemical synthesis* / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D013696:Temperature; D013818:Thermogravimetry; D028561:Transition Elements / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D001881:Borates; D001896:Boron Compounds; D056831:Coordination Complexes; D008024:Ligands; D008055:Lipids; D010640:Phenothiazines; D028561:Transition Elements