Spectral, Thermal and Antimicrobial Studies of Gamma Irradiated Potassium Diaquabis (Oxalato) Cobaltate (II)

Abstract

Potassium diaquabis(oxalato)cobaltate(II) was prepared by reported method and characterized. The sample was irradiated with 60 Co gamma rays up to 900 kGy. Spectral (IR, UVVisible), non-isothermal decomposition and antimicrobial properties of the complex were studied before and after irradiation. The bacterial strains screened were E.Coli, K.pneumonia, B.Cereus, and the fungal strains were A.niger, A.fumigatus and Penicillium sp. Notable changes in position and intensity of infrared bands after irradiation suggested hydrogen bonding and strong crosslinking in the irradiated sample. From UV spectra racah parameters were calculated before and after irradiation. Thermal decomposition was enhanced upon irradiation. Antibacterial properties of the complex were found to be decreased upon irradiation while antifungal properties were enhanced.

Antifungal potential of two synthetic vanadium (IV) oxalate compounds to control blue mold of oranges and apples under storage conditions

“…In this work, both compounds show fungitoxic properties against target fungi by affecting mycelial growth and spore germination, which is in contrast to other compounds that only exhibit single mechanisms of action. For example, (i) the complex di(4‐sulfamoyl‐phenyl‐ammonium) sulfate is extremely efficient in inhibiting spore germination but fails to reduce mycelial growth of tested fungi (Essghaier et al, 2014); (ii) the complex aminochloropyridinium diaqua dioxolato iron was unable to inhibit fungi growth with the dual culture technique (Abdelhak et al, 2014); (iii) Jayashri et al (2017) described the antifungal activity of the complex potassium (oxalato) cobatate II against Aspergillus niger and Penicillium species. The vanadium III complex demonstrated relevant activity against Candida glabrata , but was inactive against Aspergillus flavus , and had a moderate effect against other tested human pathogenic fungi such as Fusarium solani and Microspoum canis (Asif et al, 2007).…”

Investigation on CT‐DNA and Protein Interaction of New Pd(II) Complexes Involving Ceftazidime and 3‐Amino‐1,2,3‐triazole: Synthesis, Characterization, Biological Impact, Anticancer Evaluation, and Molecular Docking Approaches

“…Therefore, defect concentration-sensitive properties may be affected. [17] Based on the above facts, we have synthesized two Pd(II) complexes [Pd(CAZ)Cl 2 ] (1) and [Pd(3-AT)Cl 2 ] (2), and they were characterized by elemental analysis, FT-IR spectra, and tested for their biological activities against some selected bacteria and fungi before and after gamma irradiation, the DNA binding ability of the two Pd(II) complexes 1 and 2 with calf-thymus DNA (CT-DNA) was studied by UV/VIS. Spectroscopy.…”

Synthesis, Characterization and Thermal Analysis of an Organic-Inorganic Hybrid Salt Involving <i>Trans</i>-Diaquabis(oxalato-κ<sup>2</sup><i>O</i><sup>1</sup>,<i>O</i><sup>2</sup>)chromate(III) Complex Anion with Piperidinium as Counter Cation

“…Among the organic cations involved in these hybrid salts, the use of pyridinium cations and their derivatives to build supramolecular architectures has become an extremely active field of investigation around the world [7] [9] [11]- [16]. Furthermore, complexes involving piperidinium cations or their derivatives are known to be useful in the fields of medicine, bioinorganic chemistry and catalysis [17] [18] [19]. These cations obtained via protonation of the imine group of such organic molecules have the ability to self-assemble through the charge-assisted hydrogen bonds.…”