Electrochemical Behaviors and Determinations of Some 2,5-Disubstituted Benzoxazole Compounds at the Hanging Mercury Drop Electrode

Abstract

The electrochemical behaviors of N-(2-benzylbenzoxazol-5-yl)benzamide (B1), N-(2-benzylbenzoxazol-5-yl)-4-nitrobenzamide (B2) and N-(2-(4-chlorobenzyl)benzoxazol-5-yl)-4-nitrobenzamide (B3) were investigated by cyclic voltammetry (CV), square wave voltammetry (SWV), differential puls voltammetry (DPV), chronoamperometry (CA) and bulk electrolysis (BE) techniques in dimethylsulfoxide (DMSO) containing 0.1 M tetrabutylammonium tetrafluoroborate (TBATFB). The number of electrons transferred and diffusion coefficients were calculated by using chronoamperometry and bulk electrolysis techniques. Standard heterogeneous rate constants for the electrochemical reduction were calculated by Klingler-Kochi technique. The data obtained showed that the quantitative determination of benzoxazoles could be done by using DPV and SWV rapidly and sensitively. For the DPV technique, linear working ranges for B2 and B3 were found to be (6.

Some new IIB group complexes of an imidazolidine ligand: Synthesis, spectral characterization, electrochemical, thermal and antimicrobial properties

“…The irreversible cathodic peaks appeared at −1.35 V and −1.64 V may be attributed to the reduction of the nitroso groups to the hydroxyl amine and then to amine groups, respectively. 42,43 Based on electrochemical data in table 4, it seems that in zinc chloride and bromide complexes, the reduction of one nitrogroup to nitroso group have occurred via two different steps (peaks IIa, IIb) (instead of one step observed in free ligand as mentioned above) with anodic and cathodic shifts for (I, IIa) and IIb with respect to free ligand as shown in table 4 while other reduction peaks (III and IV) are seen in a model similar to free ligand. The electrochemical behaviour of coordinated ligand in zinc iodide is similar to free ligand but with an anodic shift in its potential values.…”

Synthesis and characterization of a new benzobisoxazole/thiophene derivative polymer and the effect of the substituent on the push/pull properties

“…Copolymers of benzobisoxazole allow obtaining systems with optical properties such as absorption and emission, high quantum yield, and photochemical stability of the polymeric chain. Indeed, a greater environmental stability as well as enhanced electronic properties is reported 27–30 . Moreover, among its most common application fields are sensors 31,32 and biocompatible systems/fibers 33–35 …”