Spin polarized spectroscopy

Keywords Surface reconstructions surface states angular resolved photoemission scanning tunneling spectroscopy spin polarized spectroscopy self-organized nucleation. [Pg.3]

Spin Polarized Spectroscopy and Imaging of Magnetic Surfaces. 17... [Pg.3]

T In this connection it should be mentioned that by induced nuclear spin-polarized spectroscopy technique Closs and Trifunae concluded that the photodecomposition of the azocompound Ph-CH2-N-N-CH2-Ph occurs from a singlet state. [Pg.597]

Closs G L and Forbes M D E 1991 EPR spectroscopy of electron spin polarized biradicals in liquid solutions. Technique, spectral simulation, scope and limitations J. Phys. Chem. 95 1924-33... [Pg.1620]

The reaction involves the transfer of an electron from the alkali metal to naphthalene. The radical nature of the anion-radical has been established from electron spin resonance spectroscopy and the carbanion nature by their reaction with carbon dioxide to form the carboxylic acid derivative. The equilibrium in Eq. 5-65 depends on the electron affinity of the hydrocarbon and the donor properties of the solvent. Biphenyl is less useful than naphthalene since its equilibrium is far less toward the anion-radical than for naphthalene. Anthracene is also less useful even though it easily forms the anion-radical. The anthracene anion-radical is too stable to initiate polymerization. Polar solvents are needed to stabilize the anion-radical, primarily via solvation of the cation. Sodium naphthalene is formed quantitatively in tetrahy-drofuran (THF), but dilution with hydrocarbons results in precipitation of sodium and regeneration of naphthalene. For the less electropositive alkaline-earth metals, an even more polar solent than THF [e.g., hexamethylphosphoramide (HMPA)] is needed. [Pg.414]

Spin-Polarized Scanning Tunneling Microscopy/Spectroscopy. 297... [Pg.276]

Wang W, Richter CA (2006) Spin-polarized inelastic electron tunneling spectroscopy of a molecular magnetic tunnel junction. Appl Phys Lett 89 153105... [Pg.301]

Pfeffer, P. E., Hicks, K. B. and Earl, W. L. 1983. Solid state structures of keto-disacchar-ides as probed by 13C cross-polarization, magic angle spinning NMR spectroscopy. Carbohydr. Res. 11, 181-194. [Pg.339]

A number of adducts of bis(acetylacetonato)nickel(lI) have been studied by H and 13C NMR spectroscopy.39739,407"423 In several cases, always when aromatic bases are involved, the shifts of both protons and carbons cannot be accounted for by cr- and r-delocalization mechanisms. Similar results have been found for non-aromatic amines such as piperidine derivatives, showing that in these complexes there are also alternating 13C contact shifts which have been accounted for by inclusion of spin polarization in the mechanism of electron spin transfer through the carbon skeleton with INDO-MO calculations.412... [Pg.57]

CP-MAS cross-polarization magic-angle spinning (NMR spectroscopy)... [Pg.96]

ESR spectroscopy has found wide-spread use for the detection of radical intermediates in electrode processes 40 For the same purpose, the newly developed technique of trapping short-lived radicals by nitrones or nitroso compounds 40d-> should be of considerable interest, as should also the chemically induced nuclear spin polarization (CINP) phenomenon 40e-1 be. [Pg.13]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...