Synthesis, Characterization and Antimicrobial Activity Studies of Chlorocobaloximes with Neutral Bases Containing Amine Functionality

The inorganic cobaloximes of type [Co(Cl)(dmgH)2B]; where dmgH = dimethyl glyoxime and B = neutral bases: glycine, ethyl amine, 2-aminopyridine, 4-aminopyridine, 2,6-diaminopyridine, aniline and 1-napthylamine have been synthesized. The synthesized cobaloximes were characterized by IR, UV-visible, 1H NMR and 13C NMR spectroscopic techniques. The cobaloxime complexes were screened for their antibacterial activity against methicillin resistant Staphylococcus aureus (MRSA) and Acinetobacter baumannii by the zone of inhibition test, biofilm eradication on biomaterial using catheter and modified Congo red agar method. It has been found that the cobaloxime complexes exhibit inhibition against both gram positive and gram negative bacteria and the cobaloximes showed better inhibition towards Gram-negative bacteria compared to Gram-positive bacteria.

Clinoptilolite nanoparticles modified with dimethyl glyoxime as a sensitive modifier for a carbon paste electrode in the voltammetric determination of Ni(ii): experimental design by response surface methodology

Clinoptilolite nanoparticles (Cn) were modified with dimethyl glyoxime (DMG) and the resulting Cn-DMG was used to construct a sensitive modified carbon paste electrode (CPE) for the voltammetric determination of Ni(ii) in aqueous media.

Synthesis, Structures, Properties and DFT Studies of a New Bicopper Complexe [Cu(Hdmg)4(Hdmg)(teda)]·6H2O

A new copper complexe [Cu (Hdmg)4(teda)]6H2O(H2dmg=dimethyl glyoxime;teda=triethylenediamine) was synthesized by solution method of nickel nitrate with corresponding ligands. Single crystal X-ray diffraction analysis reveals that crystal belongs to monoclinic, space group C2/c. The Cu2+ is five-coordinated with five N atoms of two dmg molecules and one teda molecule. The pdc anions, as a bridging ligand, link two adjacent Cu ions, forming a dinuclear structure. The structures and properties of complexes have been characterized by elemental analysis and IR spectrum. We also studied the electronic structure and orbital energies of the title complex by DFT methods, and the results reveals that the energy gap between LUMO and HOMO is disappeared. CCDC: 952374