NQR (nuclear quadrupole resonance) spectroscopy is potentially one of the best ways of characterizing the bonding of metal cations such as zirconocene cations and Ag to halogen donor atoms in weakly coordinating anions and neutral ligands such as halocarbons. Known coordination of organoiodine atoms to silver ions was studied by 1 NQR spectroscopy in [Ag(p-C<sH4I2)](P02F2), [Ag(o-C 6 H 4 I 2 ) ...

The EPR spectra of spin-labeled lipid chains in fully hydrated bilayer membranes of dimyristoyl phosphatidylcholine containing 40 mol % of cholesterol have been studied in the liquid-ordered phase at a microwave radiation frequency of 94 GHz. At such high field strengths, the spectra should be optimally sensitive to lateral chain ordering that is expected in the formation of in-plane domains. T...

The controlled destruction of the PIN diode detectors, SIEMENS SFH 870/F170 and 871/F171, by 35 MeV beam 12C 24 14N, respectively, was characterized using nuclear spectroscopy, surface profile measurements, positron annihilation spectroscopy technique. fluence in range 1012–1014 ions/cm2. It has been shown that 1012 ions/cm2 did not allow it to destroy detector. For this purpose, one needs at l...

in this research, the interactions of hcn gas with pristine, ga-, n- and gan-doped of boron phosphide nanotube (bpnts) were investigated by using density function theory (dft). the structure, electrical and nqr parameters, quantum descriptors involving energy gap, global hardness, global softness, electrophilicity, electronic chemical potential and electronegativity were calculated. the adsorpt...

Methods are described and demonstrated for detecting the coherent evolution of nuclear spin observables in zero magnetic field with the full sensitivity of high field NMR. The principle motivation is to provide a means of obtaining solid state spectra of the magnetic dipole and electric quadrupole interactions of disordered systems without the line broadening associated with random orientation ...

2,3,4,4-Tetrachloro-l-oxo-l,4-dihydronaphthaline, ß-TKN, crystallizes in the orthorhombic space group D ^ P n m a with Z = 4, and the C1 N Q R spectrum consists of three lines with an intensity ratio of 2:1:1. The crystal structure of 2,2,3,4-tetrachloro-l-oxo-l,2-dihydronaphthaline, a-TKN, is described in literature as belonging to the polar space group C ^ P ^ with Z = 2. In contradiction to ...

OBJECTIVE To determine whether oltipraz (4-methyl-5-pyrazinyl-3H-1,2-dithiole-3-thione) protects against oxidative injury in cultured human retinal pigment epithelial (hRPE) cells. METHODS Primary cultured hRPE cells were incubated with various concentrations of oltipraz followed by treatment with the chemical oxidant tert-butylhydroperoxide (tBH). Cell viability was assessed by release of la...

NMR, NQR, powder X-ray diffraction, DTA and AC conductivity were measured in RMBr4 (R = Ag, Cu; M = Al, Ga) and RM2Br7 (R = Li, Ag; M = Al, Ga). In RMBr4, the activation energy of Cu diffusion was evaluated fromCu NMR and was in good agreement with that fromBr NQR. In CuAlBr4, the e Qq/h value of Cu NMR and the value of Al NMR changed linearly with decreasing temperature, although the eQq=h val...