scholarly journals 1H NMR Studies on the Reorientational Motions of Cations in Four Solid Phases of Methylammonium Iodide and the Self-Diffusion of Ions in Its Highest-Temperature Solid Phase

1986 ◽  
Vol 59 (3) ◽  
pp. 915-924 ◽  
Author(s):  
Hiroyuki Ishida ◽  
Ryuichi Ikeda ◽  
Daiyu Nakamura
Keyword(s):  
1H Nmr ◽  
Solid Phase ◽  
The Self ◽  
Nmr Studies ◽  
Self Diffusion ◽  
Solid Phases

Cationic Self-Diffusion in the Highest-Temperature Solid Phases of Ammonium Chloride and Bromide Studied by 1H NMR

1992 ◽  
Vol 96 (4) ◽  
pp. 550-553 ◽  
Author(s):  
Masataka Tansho ◽  
Yoshihiro Furukawa ◽  
Daiyu Nakamura ◽  
Ryuichi Ikeda
Keyword(s):  
Ammonium Chloride ◽  
1H Nmr ◽  
Self Diffusion ◽  
Solid Phases

scholarly journals Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3498
Author(s):  
Sergey A. Khrapak
Keyword(s):  
Solid Phase ◽  
Excess Energy ◽  
The Self ◽  
Einstein Relation ◽  
Self Diffusion ◽  
Viscosity Coefficients ◽  
Lennard Jones ◽  
Solid Phase Transition ◽  
Solid Argon ◽  
Sound Velocities

Longitudinal and transverse sound velocities of Lennard-Jones systems are calculated at the liquid–solid coexistence using the additivity principle. The results are shown to agree well with the “exact” values obtained from their relations to excess energy and pressure. Some consequences, in particular in the context of the Lindemann’s melting rule and Stokes–Einstein relation between the self-diffusion and viscosity coefficients, are discussed. Comparison with available experimental data on the sound velocities of solid argon at melting conditions is provided.

Structural Phase Transitions in Solid tert-Butylammonium Nitrate as Studied by Differential Thermal Analysis and 1H-NMR

1989 ◽  
Vol 44 (1) ◽  
pp. 71-74
Author(s):  
Hiroyuki Ishida ◽  
Tadashi Iwachido ◽  
Naomi Hayama ◽  
Ryuichi Ikeda ◽  
Miyuki Hashimoto ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Solid Phase ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Self Diffusion ◽  
H Nmr ◽  
Nmr Techniques ◽  
Plastic Phase ◽  
Solid Phases

Abstract Seven solid phases including three metastable phases of (CH3)3CNH3NO3 were revealed by differential thermal analysis in the temperature range between 80 K and the melting point (418 K), and cationic dynamics in each phase was studied by use of 1H-NMR techniques. The highesttemperature solid phase obtainable above 412 K was found to be an ionic plastic phase, where the cations perform rapid translational self-diffusion and overall rotation about their center of gravity.

1H and 19 F NMR Studies on Molecular Motions in Two Solid Phases of t-Butylammonium Tetrafluoroborate

1998 ◽  
Vol 53 (9) ◽  
pp. 796-800 ◽  
Author(s):  
Hiroyuki Ishida
Keyword(s):  
Solid Phase ◽  
Lattice Relaxation ◽  
Lattice Relaxation Time ◽  
Spin Lattice Relaxation ◽  
Scanning Calorimetry ◽  
Nmr Studies ◽  
Spin Lattice ◽  
Solid Phases ◽  
Solid Phase Transition ◽  
19 F Nmr

Abstract Differential thermal analysis (DTA), differential scanning calorimetry (DSC), and the temperature dependence of the spin-lattice relaxation time (T1) and the second moment (M2) of 1H and 19F NMR were studied in (CH3)3CNH3BF4 and (CH3)3CND3BF4 . DTA and DSC revealed a solid-solid phase transition at 219 K for (CH3)3CNH3BF4 and at 221 K for (CH3)3CND3BF4 . The motions of cations and anions in the two solid phases were studied by T1 and M2 experiments. The motional modes of the ions and their motional parameters were determined.

1H-NMR studies on the self-association of chloroquine in aqueous solution

1990 ◽  
Vol 36 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Nadia Marchettini ◽  
Gianni Valensin ◽  
Elena Gaggelli
Keyword(s):  
Aqueous Solution ◽  
1H Nmr ◽  
The Self ◽  
Nmr Studies ◽  
Self Association

1H NMR studies of [N-MeAib1, Tyr(Me)4]ANGII and [N-MeAib1, Tyr(Me)4, Ile8]ANGII in dimethylsulfoxide by nuclear Overhauser effect (NOE) enhancement spectroscopy: cis-trans Isomerism of the His-Pro bond

1990 ◽  
Vol 55 (4) ◽  
pp. 1106-1111 ◽  
Author(s):  
John Matsoukas ◽  
Paul Cordopatis ◽  
Raghav Yamdagni ◽  
Graham J. Moore
Keyword(s):  
1H Nmr ◽  
Nuclear Overhauser Effect ◽  
Nmr Studies ◽  
Restricted Rotation ◽  
Overhauser Effect ◽  
Major Isomer ◽  
Conformational Properties ◽  
Nuclear Overhauser

The conformational properties of the Sarmesin analogues [N-MeAib1, Tyr(Me)4]ANGII and [N-MeAib1, Tyr(Me)4, Ile8]ANGII in hexadeutero-dimethysulfoxide were investigated by Nuclear Overhauser Effect (NOE) Enhancement Studies. Cis-trans isomers (ratio 1 : 6) due to restricted rotation of the His-Pro bond were observed. Interresidue interactions between the His Cα proton and the two Pro Cδ protons revealed that the major isomer was the trans.

scholarly journals Self-diffusion scalings in dense granular flows

Soft Matter ◽  
2021 ◽  
Author(s):  
Riccardo Artoni ◽  
Michele Larcher ◽  
James T. Jenkins ◽  
Patrick Richard
Keyword(s):  
Shear Rate ◽  
Solid Fraction ◽  
Granular Flows ◽  
The Self ◽  
Granular Temperature ◽  
Restitution Coefficient ◽  
Self Diffusion ◽  
Diffusivity Tensor ◽  
Dense Granular Flows

The self-diffusivity tensor in homogeneously sheared dense granular flows is anisotropic. We show how its components depend on solid fraction, restitution coefficient, shear rate, and granular temperature.

Sign in / Sign up

Export Citation Format

Share Document