Zobrazeno 1 - 10
of 104
pro vyhledávání: '"N.V. Vugman"'
Autor:
Marcelo H. Herbst, N.V. Vugman
Publikováno v:
Journal of Spectroscopy, Vol 2015 (2015)
The chemical environment of Cu2+ions adsorbed in tannin-formaldehyde resins ofAcacia mearnsiibark extracts, prepared from polybutene, is investigated by EPR spectroscopy at 300 K. The spectrum is simulated considering two isolated axial Cu(II) specie
Publikováno v:
Inorganic Chemistry Communications. 11:655-658
Interesting magnetic properties of a paddle-wheel carboxylate bridged copper(II) complex of guanidinoacetic acid (GAA), Cu2(GAA)4(NO3)2 (tetrakis(μ-guanidinoacetic acid-κ2O:O′) bis[(nitrato-κO) copper(II)]) (I) were detected by electron paramagn
Publikováno v:
Chemical Physics Letters. 453:188-191
The hyperfine coupling constants and electronic g -tensor were calculated for As Ga + (antisite defect) in gallium arsenide using saturated cluster models and the density functional theory. The calculated values for the EPR parameters present an exce
Publikováno v:
The Journal of Physical Chemistry A. 111:7218-7222
The electronic g-tensor and hyperfine coupling constants were calculated for cyanide coordination complexes [M(CN)4]3- (M = Ni, Pd, Fe, Ru, Os) in KCl or NaCl host lattices through an embedded calculation approach using the Density Functional Theory
Autor:
N.V. Vugman, Marcelo H. Herbst, Adailton J. Bortoluzzi, Josane A. Lessa, Milton M. Kanashiro, Gabrieli L. Parrilha, Fabrízio Siqueira Boniolo, Laura Jane Moreira Santiago, Adolfo Horn, Christiane Fernandes
Publikováno v:
Inorganica Chimica Acta. 359:3167-3176
We present here the synthesis, crystal structure, electrochemical behavior, spectroscopic properties (FT-IR, UV–Vis and EPR), nuclease and in vitro antitumor activities against human myeloid leukemia cell line of the mononuclear copper complex [Cu(
Autor:
Denise Mano, Barbara C. V. Neves, Allen N. Hagler, N.V. Vugman, Tomaz Langenbach, Simone J. Maciel
Publikováno v:
Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes. 41:415-425
Microbial displacement in the soil is an important process for bioremediation and dispersal of wastewater pathogens. We evaluated cell movement in surface and subsurface red-yellow podzolic soil driven by advection and microbial motility and also sur
Publikováno v:
Journal of Molecular Structure. 749:96-102
The crystal structure, electrochemical behaviour and spectroscopic properties (FT-IR, UV–vis and EPR) of the mononuclear complex [Cu(HPClNOL)(CH3CN)](ClO4)2 1, are reported. The new tetradentate ligand, HPClNOL, 1-(bis-pyridin-2-ylmethyl-amino)-3-c
Autor:
Marcelo H. Herbst, Peter B. Hitchcock, Jaísa F. Soares, Carlos Jorge da Cunha, G. Jeffery Leigh, Eduardo L. de Sá, N.V. Vugman, Geraldo R. Friedermann, Giovana G. Nunes, José Luiz dos Santos
Publikováno v:
Inorganic Chemistry Communications. 8:83-88
The green crystalline, homoleptic vanadium(IV) alkoxide [V2(μ-OPri)2(OPri)6] (I) has been reproducibly prepared in more than 60% yield; its identity was confirmed by chemical and physical methods including single-crystal X-ray diffractometry. Comple
Autor:
Carlos A. L. Filgueiras, James L. Wardell, N.V. Vugman, Paulo Sérgio da Silva Santos, Marcelo H. Herbst, Adolfo Horn, José Guilherme S. Lopes, R. Alan Howie
Publikováno v:
Inorganica Chimica Acta. 357:4240-4246
The reaction of VIVO(salen) with [Et4N][SnBr3] in air proceeds via an initial reduction to give a [VIII (salen)]+ intermediate, which is then oxidised to dark green [VVO(salen)(H2O)]Br, 1. As determined by X-ray crystallography, 1 in the solid state
Publikováno v:
Journal of Magnetic Resonance. 168:132-136
Electron spin–lattice relaxation rates for the low spin [Ni(CN)4]1− and [Ni(CN)4]3− complexes in NaCl host lattice were measured by the inversion recovery technique in the temperature range 7–50 K. The data for both paramagnetic species fit v