cyclic voltammogram and differential pulse polarograph of octaethyl porphyrin iron(iii) chloride in dichloromethane was investigated in the presence of pyridine, imidazole and collidine. values of e1/2 for feiii/feii redox reaction were monitored as a function of axial group concentration, and on the basis of these data, an overall oxidation-reduction and ligand addition scheme was formulated. ...

Coconut water (Cocos Nucifera) is shown to be a source of essential elements present in the form low-molecular weight stable complexes known for their bio-availability. The total element concentrations were range 0.2–2.7, 0.3–1, 3–14 and 0.5–2 ppm Fe, Cu, Mn, Zn, respectively, varied as function origin nut its maturity. Speciation was investigated by size-exclusion chromatography - inductively ...

Cyclic voltammogram and differential pulse polarograph of octaethyl porphyrin iron(III) chloride in dichloromethane was investigated in the presence of pyridine, imidazole and collidine. Values of E1/2 for FeIII/FeII redox reaction were monitored as a function of axial group concentration, and on the basis of these data, an overall oxidation-reduction and ligand addition scheme was formulated. ...

We present MERLIN and Hubble Space Telescope (HST) observations of the central region of the nearby radio galaxy 3C 305 and use them to study the gas and dust in this object. The MERLIN observations are of neutral hydrogen (Hi) absorption against the strong non-thermal 20cm continuum seen towards the central 4 kpc of 3C 305. Our ∼0. ′′ 2 (160 pc) resolution observations show that the Hi absorpt...

The development of high-performance nonprecious metal catalysts (NPMCs) to supersede Pt-based for the oxygen reduction reaction (ORR) in polymer electrolyte membrane fuel cells is highly desirable but remains challenging. In this paper, we present a pyrolysis strategy spatial confinement and active-site fixation using iron phthalocyanine (FePc), (Pc) Zn salts as precursors. obtained carbon-base...

A giant barocaloric effect (BCE) in a molecular material Fe3(bntrz)6(tcnset)6 (FBT) is reported, where bntrz = 4-(benzyl)-1,2,4-triazole and tcnset 1,1,3,3-tetracyano-2-thioethylepropenide. The crystal structure of FBT contains trinuclear transition metal complex that undergoes an abrupt spin-state switching between the state which all three FeII centers are high-spin (S 2) electronic configura...

The demethylation of histone H3 lysine 27 is catalyzed by the FeII/2-oxoglutarate-dependent demethylase from Class 6 (KDM6). KDM6 family (KDM6A/KDM6B) catalyzes trimethylated H3K27, which involves iron-oxo intermediates, including superoxo (FeIII−OO⋅−), Ferryl (FeIV=O), and hydroxo (FeIII−OH) complexes. study determines role second coordination sphere long-range interacting residues in KDM6′s c...