Synthesis, electrochemical and structural characterization of novel azacrown ether containing macrocyclic redox-active vic-dioxime ligand and its mononuclear transition metal complexes: Application of DEPT, HSQC, HMBC-NMR and cyclic voltammetry

Synthesis of novel ferrocene containing vic-dioxime ligands and their Ni(II), Cu(II) and Co(II) complexes: Spectral, electrochemical and biological activity studies

“…MICs were found for 1a-4a and 1b-4b, ranging from 32 mg/ml to 128 mg/ml. previous study regarding the vic-dioxime ligand and its complexes containing aza crown ether moiety [43], we obtained higher and similar MIC values (64 and 128 lg/mL) when using the complexes against the same bacteria. But in the case of the vic-dioxime ligand and complex that contain the piperazine group, the antimicrobial screening data revealed that the newly synthesized compounds exhibited mild activity compared to that of the control drugs.…”

“…Compound 3a shows a reduction peak at 0.15 V and a corresponding oxidation peak in the anodic region corresponds to the Cu(II)/Cu(I) couple. [43]. For 3a and 4a, oxime-centered reductions were observed at approximately À2.05 V. The absence of a reduction peak of the correspond approximately with the above data -0.50 V. Data was acquired by cyclic voltammetry.…”

Synthesis and spectroscopic–electrochemical properties of novel ratiometric Hg (II) chemosensor containing Bodipy and the N-phenylaza-15-crown-5 moiety

“…1. Although the N-phenylaza-15-crown-5 compounds are well known to recognize sodium, potassium, calcium, lead and mercury ions [7, 8]; our compound only selective mercury ion. So, a shift in absorption band could not be observed in these experiments except for mercury (Fig.…”

Modelling, structural, thermal, optical and vibrational studies of a new organic–inorganic hybrid material (C5H16N2)Cd1.5Cl5

“…Two successive reduction waves at the negative potential region were observed, demonstrating that electroactive species can have two different oxidation states (figure 10). Therefore, the observed waves can be respectively assigned to Cd(II)/Cd(I) (Ep c = −1.30 V, Ip c = -3.76 × 10 −5 A) and Cd(I)/Cd(0) (Ep c = -1.64 V, Ip c = -4.83 × 10 −5 A) couple processes [40,41]. In addition to these waves, there is an oxidation wave at −1.35 V, which appeared when measuring in the opposite direction.…”