title: Synthesis, spectroscopic characterization and pH dependent photometric and electrochemical fate of Schiff bases.
abstract: A new Schiff base, 1-((4-bromophenylimino) methyl) naphthalen-2-ol (BPIMN) was successfully synthesized and characterized by (1)H NMR, (13)C NMR, FTIR and UV-Vis spectroscopy. The results were compared with a structurally related Schiff base, 1-((4-chlorophenylimino) methyl) naphthalen-2-ol (CPIMN). The photometric and electrochemical fate of BPIMN and CPIMN was investigated in a wide pH range. The experimental findings were supported by quantum mechanical approach. The redox mechanistic pathways were proposed on the basis of results obtained electrochemical techniques. Moreover, pH dependent UV-Vis spectroscopy of BPIMN and CPIMN was carried out and the appearance of isosbestic points indicated the existence of these compounds in different tautomeric forms.
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan.
authors.forename: Abdur
authors.initials: A
authors.lastname: Rauf
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan; Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C 1A4, Canada. Electronic address: afzal.shah@utoronto.ca.
authors.forename: Afzal
authors.initials: A
authors.lastname: Shah
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan.
authors.forename: Saghir
authors.initials: S
authors.lastname: Abbas
authors.affiliation: Deanship of Scientific Research, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
authors.forename: Usman Ali
authors.initials: UA
authors.lastname: Rana
authors.affiliation: Deanship of Scientific Research, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
authors.forename: Salah Ud-Din
authors.initials: SU
authors.lastname: Khan
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan.
authors.forename: Saqib
authors.initials: S
authors.lastname: Ali
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan.
authors.lastname: Zia-Ur-Rehman
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, 45320 Islamabad, Pakistan.
authors.forename: Rumana
authors.initials: R
authors.lastname: Qureshi
authors.affiliation: Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C 1A4, Canada.
authors.forename: Heinz-Bernhard
authors.initials: HB
authors.lastname: Kraatz
authors.affiliation: Department de Chimie, Universite de Montreal, Montreal, Canada.
authors.forename: Francine
authors.initials: F
authors.lastname: Belanger-Gariepy
mesh_terms: D055664:Electrochemical Techniques; D054879:Halogenation; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008958:Models, Molecular; D009281:Naphthalenes / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction; D010783:Photometry; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013237:Stereoisomerism
chemical_list: D009281:Naphthalenes; D012545:Schiff Bases
keywords: Isosbestic point; Redox mechanism; Schiff base; Spectroscopic characterization