Hahn echomodulated demagnetizing fieldsliquidsnonlinear evolutionmultiple echoessingle-quantum characterintermolecular multiple-quantum coherence transfer echoesNMR spectroscopyStrong effects of modulated demagnetizing fields on the attenuation of Hahn echoes in liquids are shown theoretically as well as experimentally...
Theoretical or Mathematical, Experimental/ aluminium compounds nuclear magnetic resonance quadrupole coupling quadrupole interactions spin echo (NMR) spin-spin relaxation/ mathematical analysis electric-quadrupole interactions heteronuclear magnetic-dipole interactions spin-5/2 Hahn-echo amplitudes solids FID quadrup...
1998). This result, together with the results of 23Na spin-echo decay measurements, have been taken as a strong argument against previously-proposed clustering models for the glass structure. 23Na dynamic angle spinning (DAS) NMR at two magnetic fields has been used to determine the chemical ...
1H?X shift‐correlated two‐dimensional NMR1J(15N, X), 3J(15N, 1H)relative signs of 1KNX, 1KNH15N/14N isotope effects on X chemical shiftsThe application of a Hahn spin–echo extended X–1H shift-correlated (X = 13C, 29Si, 119Sn, 207Pb) two-dimensional NMR technique to carbon–,...
15N NMR29Si NMRHahn‐echo extended INEPTψ‐BIRD‐HSQC and ‐HMQC1J(29Si 15N)relative signs15N and 29Si NMR data of 2,5-hydro-1,2,5-azasilaborole derivatives and related compounds were determined with emphasis on coupling constants 1J(29Si 15N) which cannot be measured from 15N NMR ...
spin echo (NMR)/ ferroliquid macroparticlesHahn spin echo-signalamplitudesCarr-Purcell echo-signalspi/2 pulse applicationvolume concentrationdephasingFocuses on the influence of magnetic fields of ferroliquid macroparticles on the attenuation of the Hahn spin echo-signal. Form of the ratio of the ...
Formation of an additional double-quantum echo that does not occur in the ordinary situation in nuclear magnetic resonance (NMR) or electron paramagnetic resonance (EPR) spectroscopy.TangJauThurnauerMarionC.EBSCO_AspJournal of Chemical Physics
Coupling constants 2J(15N13CR) and nJ(15N1HR) in 2-substituted pyridines [R = Me (1), CH=CH2 (2), C≡CH (3), C(O)H (4), C(O)Me (5)] have been measured by using Hahn-echo extended (HEED) pulse sequences for one- (1 D) and two-dimensional (2D) 13C/1H NMR (HEED...
Solid-state NMRFast MASHeteronuclear decouplingHahn-echoHigh-resolutionA new heteronuclear decoupling mechanism under fast magic-angle spinning MAS is introduced. It is based on refocusing the coherences responsible for the dephase of low-gamma nuclei ((13)C, (15)N) transverse spin-polarization in...
Residual dipolar couplings and averaged correlation time maps in soft matter were obtained by mixed echo phase-encoding solid imaging (MIPSI). Use of the mixed echo in soft matter NMR imaging experiments has two crucial advantages: the signal intensity is recovered with a weak incoherence losses,...