ChemInform Abstract: DETERMINATION OF A HIGH POTENTIAL BARRIER HINDERING INTERNAL ROTATION FROM THE ANALYSIS OF THE GROUND-STATE SPECTRUM: THE CASE OF ETHYL CYANIDE

1981 ◽  
Vol 12 (7) ◽  
Author(s):  
D. BOUCHER ◽  
A. DUBRULLE ◽  
J. DEMAISON ◽  
H. DREIZLER
Keyword(s):  
Internal Rotation ◽  
Potential Barrier ◽  
Ground State ◽  
High Potential ◽  
High Potential Barrier

scholarly journals Determination of a High Potential Barrier Hindering Internal Rotation from the Ground State Spectrum

1983 ◽  
Vol 38 (9) ◽  
pp. 1010-1014 ◽  
Author(s):  
W. Stahl ◽  
H. Dreizler ◽  
M. Hayashi
Keyword(s):  
Internal Rotation ◽  
Potential Barrier ◽  
Ground State ◽  
High Potential ◽  
Rotational Spectrum ◽  
High Potential Barrier

Abstract We present an analysis of the rotational spectrum of ethylchloride-35Cl in the ground state. The 35Cl-hfs analysis was extended and the barrier to internal rotation determined from narrow splittings of high J-transitions.

Determination of a High Potential Barrier Hindering Internal Rotation from the Analysis of the Ground State Spectrum: The Case of Ethyl Cyanide

1980 ◽  
Vol 35 (11) ◽  
pp. 1136-1141 ◽  
Author(s):  
D. Boucher ◽  
A. Dubrulle ◽  
J. Demaison ◽  
H. Dreizler
Keyword(s):  
Internal Rotation ◽  
Potential Barrier ◽  
Ground State ◽  
High Potential ◽  
State Transitions ◽  
Rotational Spectrum ◽  
Barrier Potential ◽  
High Potential Barrier

Abstract The ground state rotational spectrum of ethyl cyanide has been reinvestigated between 8 and 250 GHz. The barrier potential V3 is calculated from 11 high J, ground state transitions which were found split into doublets. V3 is 3007 cal/mole, assuming Iα = 3.167 u Å2 and ∢ (i,a) = 48.65°. The splittings of the K-doublet transitious have also been analyzed.

Determination of a High Potential Barrier Hindering Internal Rotation from the Ground State Spectrum. The Methylbarrier of Ethylbromide

1985 ◽  
Vol 40 (6) ◽  
pp. 575-587 ◽  
Author(s):  
J. Gripp ◽  
H. Dreizler ◽  
R. Schwarz
Keyword(s):  
Hyperfine Structure ◽  
Internal Rotation ◽  
Potential Barrier ◽  
Ground State ◽  
Rotational Spectrum ◽  
Centrifugal Distortion ◽  
Vibrational Ground State ◽  
Distortion Analysis ◽  
High Potential Barrier

For ethylbromide a determination of the parameters of internal rotation is given derived from the rotational spectrum of the torsional and vibrational ground state. The Br-hyperfine structure is reanalysed with higher precision. As high J transitions were measured a centrifugal distortion analysis was necessary.

Determination of a High Potential Barrier Hindering Internal Rotation from the Ground State Spectrum The Methylbarrier of cis-Propanal

1982 ◽  
Vol 37 (9) ◽  
pp. 1035-1037 ◽  
Author(s):  
J. A. Hardy ◽  
A. P. Cox ◽  
E. Fliege ◽  
H. Dreizler
Keyword(s):  
Internal Rotation ◽  
Potential Barrier ◽  
Ground State ◽  
Model Errors ◽  
Centrifugal Distortion ◽  
Methyl Group ◽  
Distortion Analysis ◽  
High Potential Barrier ◽  
Double Resonances

Abstract The barrier hindering internal rotation of the methyl group was determined by analysing the splittings of rotational lines in the ground state. So model errors are minimized. The assignment was checked by double resonances and a centrifugal distortion analysis.

High-temperature luminescence in an n-GaSb/n-InGaAsSb/p-AlGaAsSb light-emitting heterostructure with a high potential barrier

2013 ◽  
Vol 47 (9) ◽  
pp. 1258-1263 ◽  
Author(s):  
A. A. Petukhov ◽  
B. E. Zhurtanov ◽  
K. V. Kalinina ◽  
N. D. Stoyanov ◽  
H. M. Salikhov ◽  
...  
Keyword(s):  
High Temperature ◽  
Potential Barrier ◽  
High Potential ◽  
Light Emitting ◽  
High Potential Barrier

Determination of a High Barrier Hindering Internal Rotation from the Ground State Spectrum. The Methylbarrier of Propane

1985 ◽  
Vol 40 (3) ◽  
pp. 271-273 ◽  
Author(s):  
G. Bestmann ◽  
W. Lalowski ◽  
H. Dreizler
Keyword(s):  
Fine Structure ◽  
Internal Rotation ◽  
Ground State ◽  
Methyl Groups ◽  
Rotational Spectrum ◽  
Rotation Barrier ◽  
Rotation Axes ◽  
Internal Rotation Barrier ◽  
The Moment

The internal rotation barrier V3, the moment of inertia Iα of the methyl tops and the angle between the two internal rotation axes were determined from the torsional fine structure of the rotational spectrum in the torsional ground state. A tilt angle of 1.4° of the methyl groups toward each other results.

Determination of a High Potential Barrier Hindering Internal Rotation in 2-Methylcyclopentanone and α-Methyl-γ-Butyrolactone by Microwave Fourier Transform Spectroscopy

1992 ◽  
Vol 47 (6) ◽  
pp. 761-764 ◽  
Author(s):  
J. L. Alonso ◽  
N. Heineking ◽  
H. Dreizler ◽  
N. Heineking ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Internal Rotation ◽  
Excited States ◽  
Fourier Transform Spectroscopy ◽  
Vibrationally Excited ◽  
Methyl Group ◽  
Internal Rotation Barrier ◽  
High Potential Barrier ◽  
Method Analysis

AbstractThe microwave spectra of α-methyl-γ-butyrolactone and 2-methylcyclopentanone have been reinvestigated using microwave Fourier transform spectroscopy. A-E splittings due to internal rotation of the methyl group have been observed in the ground and several vibrationally excited states for both molecules. From an internal-axis-method analysis of these splittings, values of the methyl group internal rotation barrier of 2.61 kcal mol-1 for α-methyl-γ-butyrolactone and 2.41 kcal mol-1 for 2-methylcyclopentanone have been obtained.

Determination of a High Barrier Hindering Internal Rotation from the Ground State Spectrum. The Methylbarrier of 1-Butyne

1985 ◽  
Vol 40 (3) ◽  
pp. 263-266 ◽  
Author(s):  
G. Bestmann ◽  
H. Dreizler
Keyword(s):  
Internal Rotation ◽  
Ground State ◽  
Rotational Spectrum ◽  
Rotational Spectra

With 1-butyne a series of barrier determinations from rotational spectra in the torsional ground state of ethyl compounds was continued. The barrier is different to the value from an analysis of the rotational spectrum of the first torsional state.

Fabrication of InGaAs/GaAs Light-Emitting Diodes with GaMnSb Ferromagnetic Injector Layer

2012 ◽  
Vol 190 ◽  
pp. 89-92
Author(s):  
M.V. Dorokhin ◽  
Y.A. Danilov ◽  
Alexei V. Kudrin ◽  
E.I. Malysheva ◽  
M.M. Prokof’eva ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Potential Barrier ◽  
Light Emitting Diodes ◽  
Spin Injection ◽  
High Potential ◽  
Hole Injection ◽  
Injection Efficiency ◽  
Light Emitting ◽  
Electroluminescence Intensity ◽  
High Potential Barrier

The electroluminescence properties of ferromagnetic GaMnSb/GaAs diodes have been investigated. It has been found that diodes properties are significantly dependent on GaMnSb layer electrical properties. The intensity of electroluminescence of the diode with semiconductor GaMnSb contact is relatively low, that is due to a high potential barrier at the interface. In case of metallic GaMnSb/GaAs contact high hole injection efficiency provides relatively high electroluminescence intensity. Investigated light-emitting diodes can be prospective for investigation of spin injection effects.

Effects of high potential barrier on InAs quantum dots and wetting layer

2002 ◽  
Vol 91 (8) ◽  
pp. 5055-5059 ◽  
Author(s):  
Jin Soo Kim ◽  
Phil Won Yu ◽  
Jae-Young Leem ◽  
Minhyon Jeon ◽  
Sam Kyu Noh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Potential Barrier ◽  
High Potential ◽  
Wetting Layer ◽  
Inas Quantum Dots ◽  
High Potential Barrier
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