DIELECTRIC CONSTANT OF HYDROGEN-BONDED LIQUIDS. II. N-MONOSUBSTITUTED ACETAMIDES

1963 ◽  
Vol 67 (9) ◽  
pp. 1805-1810 ◽  
Author(s):  
Ruey-yuan Lin ◽  
Walter Dannhauser
Keyword(s):  
Dielectric Constant ◽  
Hydrogen Bonded

The reaction of trimethylamine in liquid hydrogen sulphide: an electrical conductivity study

1983 ◽  
Vol 61 (6) ◽  
pp. 1142-1145 ◽  
Author(s):  
James D. Halliday ◽  
Patrick E. Bindner
Keyword(s):  
Electrical Conductivity ◽  
Dielectric Constant ◽  
Hydrogen Sulphide ◽  
Liquid Hydrogen ◽  
Weak Electrolyte ◽  
Temperature Range ◽  
Conductance Data ◽  
Brønsted Base ◽  
Electrical Conductivity Study ◽  
Hydrogen Bonded

The electrical conductivity of trimethylamine solutions (2.26 × 10−4 to 2.89 × 10−1 mol L−1) in liquid hydrogen sulphide over the temperature range −72.5 °C to +25.0 °C has been measured. The data indicate that the trimethylamine behaves as a Brønsted base in liquid hydrogen sulphide [1] and is protonated to form trimethylammonium hydrogensulphide. The latter[Formula: see text]behaves as a normal weak electrolyte in a solvent of low to medium dielectric constant [Formula: see text]. The conductance data as a function of temperature also show that trimethylamine exists both as a hydrogen bonded complex with H2S and as an unassociated molecule in liquid H2S.

scholarly journals Study of Ferroelectric Properties of Hydrogen Bonded Rubidium Dihydrogen Arsenate (RdA) Crystal

2021 ◽  
Vol 16 (2) ◽  
Author(s):  
Pawan Singh ◽  
Trilok Chandra Upadhya ◽  
Muzaffar Iqbal Khan ◽  
Sidharth Kashyap
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Response Function ◽  
Ferroelectric Properties ◽  
Mode Frequency ◽  
Experimental Results ◽  
Ferroelectric Crystal ◽  
Coupled Mode ◽  
Theoretical Results ◽  
Hydrogen Bonded

A simple pseudospin lattice coupled mode model with addition of third and fourth-order phonon anharmonic interactions terms, direct spin-spin interactions terms and external electric field term has been considered for investigation of transition phenomena and dielectric properties of hydrogen bonded ferroelectric crystal Rubidium dihydrogen arsenate (RDA). A double-time thermal dependent Green’s function method has been used for derivation of response function. From response function shift, width and soft mode frequency have been derived for RDA crystal. Response function is also related to dielectric constant which has been obtained in present paper. By fitting model values of different parameters in obtained expressions, the temperature variations of normal mode frequency, dielectric constant, and loss tangent have been calculated numerically for RDA crystal. Our theoretical results are compared with experimental results. It is observed that our theoretical results agree with experimental results. Therefore, it can be concluded that the modified pseudo-spin lattice coupled mode model with the simplest approximation is quite suitable to explain the transition and dielectric properties of RDA crystal.

Tropolone-triethylamine equilibria in various solvents

1980 ◽  
Vol 33 (3) ◽  
pp. 491 ◽  
Author(s):  
B Poh ◽  
H Siow
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Dielectric Constant ◽  
Aprotic Solvent ◽  
Ion Pair ◽  
Pair Formation ◽  
Spectroscopic Methods ◽  
Aprotic Solvents ◽  
Ion Pair Formation ◽  
No Formation ◽  
Hydrogen Bonded

Infrared and nuclear magnetic resonance spectroscopic methods were used to study the tropolonetriethylamine equilibria. In aprotic solvents tropolone transfers its proton to triethylamine to form an ion pair which is in equilibrium with the intramolecularly hydrogen-bonded tropolone. The extent of ion pair formation increases with the dielectric constant of the aprotic solvent. Unlike the case of the p- nitrophenol-triethylamine system, there is no formation of a hydrogen bonded complex between tropolone and triethylamine. In the case of the tropolone-dibutylamine system in aprotic solvents, only ion pair formation is observed.

Dielectric Constant of Hydrogen‐Bonded Liquids. I. Cyanoacetylene

1963 ◽  
Vol 38 (1) ◽  
pp. 69-72 ◽  
Author(s):  
Walter Dannhauser ◽  
Arthur F. Flueckinger
Keyword(s):  
Dielectric Constant ◽  
Hydrogen Bonded

Dielectric Constant of Hydrogen Bonded Liquids. III. Superheated Alcohols

1964 ◽  
Vol 40 (10) ◽  
pp. 3058-3066 ◽  
Author(s):  
Walter Dannhauser ◽  
Lowell W. Bahe
Keyword(s):  
Dielectric Constant ◽  
Hydrogen Bonded

Dielectric Constant of Hydrogen‐Bonded Liquids. IV. Equilibrium and Relaxation Studies of Homologous Neo‐Alcohols

1965 ◽  
Vol 43 (1) ◽  
pp. 257-266 ◽  
Author(s):  
W. Dannhauser ◽  
L. W. Bahe ◽  
R. Y. Lin ◽  
A. F. Flueckinger
Keyword(s):  
Dielectric Constant ◽  
Relaxation Studies ◽  
Hydrogen Bonded
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