Specifics of the Frequency Dispersion of Natural Optical Activity of a Nonideal Molecular Crystal in the Exciton Region of Energy Spectrum

2021 ◽  
Author(s):  
A. E. Rybalka ◽  
V. V. Rumyantsev ◽  
S. A. Fedorov ◽  
K. V. Gumennik
Keyword(s):  
Energy Spectrum ◽  
Optical Activity ◽  
Molecular Crystal ◽  
Frequency Dispersion ◽  
Exciton Region

Low Frequency Dispersion of a Molecular Crystal

1977 ◽  
Vol 32 (5) ◽  
pp. 515-516
Author(s):  
B. Hinopoulos ◽  
P. U. Sakellaridis
Keyword(s):  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Molecular Crystal ◽  
Low Frequency ◽  
Frequency Dispersion ◽  
Lattice Defects ◽  
Dielectric Behaviour ◽  
Crystalline Sample ◽  
Dielectric Relaxation Process

Abstract The dielectric behaviour of solid 1,4-Butandiol has been studied. A region of low frequency dispersion has been ob­ served. In a crystalline sample treated to have more lattice faults, the losses were increased. The effect is attributed to a dielectric relaxation process existing in connection with the lattice defects.

Advancing the use of Voronoi–Dirichlet polyhedra to describe interactions in organic molecular crystal structures by the example of galunisertib polymorphs

CrystEngComm ◽  
2021 ◽  
Author(s):  
Viktor N. Serezhkin ◽  
Anton V. Savchenkov
Keyword(s):  
Crystal Structures ◽  
Molecular Crystal ◽  
Noncovalent Interactions ◽  
Organic Molecular Crystal ◽  
Universal Approach ◽  
Structure Properties

The universal approach for studying structure/properties relationships shows that every polymorph of galunisertib is characterized with unique noncovalent interactions.

The electronic energy spectrum of zero-gap semiconductors

1976 ◽  
Vol 120 (11) ◽  
pp. 337 ◽  
Author(s):  
B.L. Gel'mont ◽  
V.I. Ivanov-Omskii ◽  
I.M. Tsidil'kovskii
Keyword(s):  
Energy Spectrum ◽  
Electronic Energy ◽  
Electronic Energy Spectrum
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