As alternative energy sources are essential to reach a climate-neutral economy, hydrogen peroxide (H2O2) as futuristic carrier gains enormous awareness. However, seeking for stable and electrochemically selective H2O2 ORR electrocatalyst is yet challenge, making the design of—ideally—bifunctional catalysts extremely important outmost of interest. In this study, we explore application trimetalli...

The free ligand, deferroviridomycin A, and its iron(II) complex, viridomycin A, were detected in culture supernatant fluids of Streptomyces viridans 1671 and were structurally characterized as 4-hydroxy-3-nitrosobenzaldehyde and tris(4-hydroxy-3-nitrosobenzaldehydato-N3,O4)ferrate(II), respectively. We investigated the antibiotic activity of the above compounds and of the chemically synthesized...

in this work, a new spectrophotometric method for the determination of trace amount of cobalt (іі) ionwas investigated and the stability constant of the related complex was evaluated 2.174 × 104. in the cobalt(іі)-piroxicam complex, the maximum absorbance wavelength is 570 nm and the linearity of calibrationcurve was investigated (5-10 ppm). the relative standard deviation for seven replicate e...

A study was undertaken in order to understand the kinetics and mechanism of the chemical oxidation of N,N-diethyl-m-toluamide, an insect repellent, by sulfate radical. In this experiment, sulfate radical was generated using peroxymonosulfate with iron(II) and cobalt(II) as activator. The second-order rate constant for the reaction of the sulfate radical with N,N-diethyl-m-toluamide was found to...

The reactivity of the PGeP germylene 2,2’-bis(di-isopropylphosphanylmethyl)-5,5’-dimethyldipyrromethane-1,1’-diylgermanium(II), Ge(pyrmPiPr2)2CMe2, with late first-row transition metal (Fe-Zn) dichlorides has been investigated. All reactions led to pincer chloridogermyl complexes. FeCl2 and CoCl2 afforded paramagnetic square planar complexes formula [MCl{?3P,Ge,P-GeCl(pyrmPiPr2)2CMe2}] (M=Fe, C...

Electronic factors essential for the bonding of a non-innocent NO ligand to ammonia-modified Co(2+) sites in cobalt-exchanged zeolites are examined for small cluster models using DFT and advanced correlated wave function calculations. The analysis of charge transfer processes between the NO ligand and the cobalt center involves two protocols: valence-bond expansion of the multiconfiguration CAS...

In this review, I tell the story of the cobalt chemistry that has been developed in my group since 2011. First, we achieved the total synthesis of polyketide natural product trichodermatide A, which involved a late-stage Isayama-Mukaiyama hydration of an enol ether using cobalt(II) acetylacetonate (Co(acac)2) that gave the desired product chemo-, regio-, and diastereoselectively. After our repo...