Some selected transition (Cu, Cr, Mn, Fe, Co and Ni) and non-transition (Zn and Pb) metal complexes of arylhydrazones, namely o-hydroxyacetophenone benzoylhydrazone (HBH) and o-mthoxybenzaldehyde benzoylhydrazone (MBH) have been isolated and characterized by a combination of elemental analysis, spectral (UV-Vis., IR, H NMR) and magnetic measurements. Only two divalent metals (Cu and Ni) yield s...

The concentrations of iron (Fe), copper (Cu), zinc (Zn), nickel (Ni), manganese (Mn), cadmium (Cd), lead (Pb) and chromium (Cr) in chicken meat, chicken gizzard and turkey meat consumed in southern Nigeria were determined after nitric acid/perchloric acid digestion using graphite furnace atomic absorption spectrophotometry. The order of the elements in the chicken meat, chicken gizzard and turk...

The optical and magnetic properties of the multi-metal rings [NH(2)R(2)][Cr(7)MF(8)(O(2)CCMe(3))(16)], where M = Cd(II), Mn(II) or Ni(II), have been studied using variable-field and variable-temperature magnetic circular dichroism (MCD) in the UV-visible spectra. Spectra of samples were recorded in a frozen organic matrix or cast in a polymethacrylate (PMMA) polymer film between 1.7 and 75 K. T...

The divalent transition-metal cations Fe, Co, and Ni were used to test the hypothesis that Mn ions pass through calcium channels because Mn ions have a relatively low energy of hydration. The test ions were applied to the bath and comparisons were made of their effects on Ca or Mn spikes elicited from myoepithelial cells of the proventriculus of the polychaete worm Syllis spongiphila. Control e...

The two unique Ni(II) atoms of the title complex, [MnNi(2)(C(11)H(8)N(3)O(6))(2)(H(2)O)(4)]·4H(2)O, have a slightly distorted square-planar coordination environment with a tetra-dentate N-(5-nitro-2-oxidobenzyl-idene)glycylglycinate Schiff base trianion. The Ni(II) atoms are coordinated by one phenolate O atom, one imine N atom, one amido N atom and one carboxyl-ate O atom. The Mn(II )atom is c...

Lithium-rich Li(1.13)Ni(0.30)Mn(0.57)O2 has been functionally modified with fast Li(+)-ion conducting Li2SiO3via a facile and novel method, based on the reaction between Ni(0.35)Mn(0.65)C2O4·xH2O and Si(OC2H5)4. Due to the unique Li2SiO3 coating layer which greatly improves the Li(+) ion diffusion rate, Li2SiO3@Li(1.13)Ni(0.30)Mn(0.57)O2 exhibits outstanding rate capability, cycle stability and...

We have developed commercially viable phytoremediation/phytomining technologies employing Alyssum Ni-hyperaccumulator species to quantitatively extract Ni from soils. The majority of Ni is stored either in Alyssum leaf epidermal cell vacuoles or in the basal portions only of the numerous stellate trichomes. Here, we report simultaneous and region-specific localization of high levels of Ni, Mn, ...