Conformation of 2-thiophenesulphonanilides from dipole moment studies

1976 ◽  
Vol 54 (11) ◽  
pp. 1672-1677 ◽  
Author(s):  
Giuseppe C. Pappalardo ◽  
Salvatore Gruttadauria ◽  
Emanuele Maccarone ◽  
Giuseppe Musumarra
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Method Of Calculation ◽  
Additive Method ◽  
Calculation Results

The electric dipole moments of a number of 2-thiophenesulphonanilides have been measured in benzene solution at 25 °C. The data obtained have been analyzed by the vectorial additive method of calculation. Results of the calculations have shown that the SO2—NH group prefers the gauche-syn conformation in which the N—H bond lies on the plane bisecting the OSO angle. Conformations about the Ph—N bond in the 2′- and 3′-substituted derivatives have also been determined and are discussed.

On the molecular conformation of the bis-1,3-dioxolyl molecule in decahydronaphthalene and benzene solutions

1977 ◽  
Vol 55 (9) ◽  
pp. 1440-1443 ◽  
Author(s):  
Ernst Bock ◽  
Garnette Sutherland ◽  
David McKinnon ◽  
Edward Tomchuk
Keyword(s):  
Dipole Moment ◽  
Temperature Dependence ◽  
Electric Dipole ◽  
Molecular Conformation ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Conformational Behavior ◽  
Electric Dipole Moments ◽  
Solvation Theory

The electric dipole moments of the bis-1,3-dioxolyl molecule were determined in dilute decahydronaphthalene solution at 25 and 100 °C and in dilute benzene solution at 25 °C. From the temperature dependence of the dipole moment it is concluded that the trans rotamer of the molecule is more stable in both solvents than the gauche rotamer by ∼4.5 kJ mol−1. The conformational behavior of the molecule is discussed in terms of a recently proposed solvation theory.

Electric dipole moments of ortho-, meta-, para-, and penta-fluorostyrene molecules

1968 ◽  
Vol 46 (18) ◽  
pp. 2961-2962 ◽  
Author(s):  
E. Bock ◽  
D. Iwacha
Keyword(s):  
Dipole Moment ◽  
Benzene Ring ◽  
Electric Dipole ◽  
Fluorine Atom ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Molecular Dipole ◽  
Molecular Dipole Moment

The dipole moments of ortho-, meta-, para-, and penta-fluorostyrene were determined in dilute benzene solution at 25 °C. It was found that the magnitude of the molecular dipole moment depends on the position of the fluorine atom in the benzene ring.

Electric dipole moments and molar Kerr constants of Phenyl- and Diphenylpyridylmethanes

1973 ◽  
Vol 26 (10) ◽  
pp. 2077 ◽  
Author(s):  
KK Chiu ◽  
HH Huang
Keyword(s):  
Dipole Moment ◽  
Carbon Tetrachloride ◽  
Weak Interaction ◽  
Electric Dipole ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Total Polarization ◽  
The Difference ◽  
Kerr Constants

The difference in total polarization (ΔP) or dipole moment (ΔP) of 2- benzyl-pyridine, 4-benzylpyridine, diphenyl-2-pyridylmethane, diphenyl- 3-pyridylmethane, or diphenyl-4-pyridylmethane in carbon tetrachloride relative to benzene solution provides evidence of weak interaction between these amines and the former solvent. The molar Kerr constants of the amines in the two solvents for 4-benzylpyridine and diphenyl-4- pyridylmethane are analysed to yield the preferred angles of orientation of the phenyl and 4-pyridyl rings in these two molecules.

Dipole Moments and Configurations of Triaryl Acrilonitriles

1983 ◽  
Vol 38 (1) ◽  
pp. 90-94
Author(s):  
D. Carbone ◽  
A. Chisari ◽  
E. Montoneri ◽  
G. C. Pappalardo ◽  
G. Scarlata
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Calculated Dipole Moment ◽  
Molecular Moment

Abstract The electric dipole moments of trans-1,2 diaryl acrilonitrile 1 and of a series of triaryl acrilonitriles 2-14 were measured in benzene solution at 25 °C. A mesomeric moment of 0.4 D was found to act between the phenyl-and the nitrile groups through the vinylic bond in triaryl acrilonitrile 2. For this molecule the direction of action of the total molecular moment was calculated and used to evaluate theoretical moments for the possible E and Z configurations of some unsymmetrical derivative compounds of the series. The configuration was settled for each com-pound on the basis of comparison between experimental and calculated dipole moment values.

scholarly journals DERIVATION OF GENERALIZED THOMAS–BARGMANN–MICHEL–TELEGDI EQUATION FOR A PARTICLE WITH ELECTRIC DIPOLE MOMENT

2013 ◽  
Vol 28 (29) ◽  
pp. 1350147 ◽  
Author(s):  
TAKESHI FUKUYAMA ◽  
ALEXANDER J. SILENKO
Keyword(s):  
Dipole Moment ◽  
Electromagnetic Fields ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Classical Equation ◽  
Spin Motion ◽  
Electric Dipole Moments ◽  
Momentum Direction ◽  
Telegdi Equation

General classical equation of spin motion is explicitly derived for a particle with magnetic and electric dipole moments in electromagnetic fields. Equation describing the spin motion relative to the momentum direction in storage rings is also obtained.

Elektrisches Dipolmoment von TlBr und TlJ

1971 ◽  
Vol 26 (11) ◽  
pp. 1809-1812 ◽  
Author(s):  
E. Tiemann
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Vibrational State ◽  
Stark Effect ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Ground Vibrational State ◽  
Rotational Transitions

Stark-effect measurements on pure rotational transitions of TlBr and Til are described. The derived electric dipole moments of the most abundant isotopic molecules on the ground vibrational state are:205TL79Br : | μ0| = (4.493 ± 0.050) D , 205Tl127 I | μ 0| =(4.607 ± 0.070) D .The electric dipole moment of 205Tl19F | μ 0|=4.2282 (8) D was used as standard.

scholarly journals Electric Dipole Moment Results from lattice QCD

2018 ◽  
Vol 175 ◽  
pp. 06018 ◽  
Author(s):  
Jack Dragos ◽  
Thomas Luu ◽  
Andrea Shindler ◽  
Jordy de Vries
Keyword(s):  
Renormalization Group ◽  
Dipole Moment ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Gradient Flow ◽  
Gauge Fields ◽  
Electric Dipole Moments ◽  
Gauge Action ◽  
Promising Tool ◽  
Local Operators

We utilize the gradient flow to define and calculate electric dipole moments induced by the strong QCD θ-term and the dimension-6 Weinberg operator. The gradient flow is a promising tool to simplify the renormalization pattern of local operators. The results of the nucleon electric dipole moments are calculated on PACS-CS gauge fields (available from the ILDG) using Nf = 2+1, of discrete size 323×64 and spacing a ≃ 0.09 fm. These gauge fields use a renormalization-group improved gauge action and a nonperturbatively O(a) improved clover quark action at β = 1.90, with cSW = 1.715. The calculation is performed at pion masses of mπ ≃ 411, 701 MeV.

Probing new CP-odd thresholds with electric dipole moments

2007 ◽  
Vol 85 (6) ◽  
pp. 597-606
Author(s):  
A Ritz
Keyword(s):  
Dipole Moment ◽  
Cp Violation ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Dipole Moments ◽  
New Physics ◽  
Electric Dipole Moments ◽  
Higher Dimensional ◽  
The Status ◽  
Generic Class

We dicuss the utility of precision probes for flavour-diagonal CP-violation, namely, searches for electric dipole moments of nucleons, atoms, and molecules, in looking for new physics thresholds that manifest themselves primarily through higher dimensional operators. After reviewing the status of the electric dipole moment (EDM) constraints, we consider first the sensitivity to a generic class of dimension-five operators generated at a supersymmetric threshold, through their contribution to CP- and flavour-violating observables. Such thresholds can be probed by EDMs up to a scale of order 108 GeV depending on the flavour structure. We then turn to consider the possibility that electroweak baryogenesis is made feasible by the introduction of dimension-six operators at a TeV-scale threshold. The EDM costraints on dimension-six couplings of the Higgs to the fermions currently still allow a reasonable window in parameter space for these models, but the next generation of experiments should provide a conclusive test. PACS Nos.: 11.30.Er, 12.60.Fr, 12.60.Jv

scholarly journals CP VIOLATION IN SUPERSYMMETRIC THEORIES

2003 ◽  
Vol 18 (10) ◽  
pp. 1697-1732 ◽  
Author(s):  
SHAABAN KHALIL
Keyword(s):  
Dipole Moment ◽  
Cp Violation ◽  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Neutron Electric Dipole Moment ◽  
Cp Asymmetry ◽  
Electric Dipole Moments ◽  
The Standard Model ◽  
Supersymmetric Theories

We review the present status of the CP violating problem in supersymmetric extensions of the standard model. We analyze the constraints imposed by the experimental limits of the electron, neutron, and mercury electric dipole moments on the supersymmetric CP phases and show that only the scenarios with flavour-off-diagonal CP violation remain attractive. These scenarios require Hermitian Yukawa matrices which naturally arise in models with left–right symmetry or a SU(3) flavour symmetry. In this case, εK and ε′/ε can be saturated by a small non-universality of the soft scalar masses through the gluino and chargino contributions respectively. The model also predicts a strong correlation between A CP (b → sγ) and the neutron electric dipole moment. In this framework, the standard model gives a the leading contribution to the CP asymmetry in B → ψKS decay, while the dominant chargino contribution to this asymmetry is < 0.2. Thus, no constraint is set on the non-universality of this model by the recent BaBar and Belle measurements.

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