CRYSTAL STRUCTURE AND THEORETICAL CALCULATIONS OF 1-(4-TRIFLUOROMETHYL-2,3,5,6-TETRAFLUOROPHENYL)-3-BENZYLIMIDAZOLIUM BROMIDE

2017 ◽  
Keyword(s):  
Crystal Structure ◽  
Theoretical Calculations

scholarly journals Etude par résonance magnétique nucléaire de composés organiques contenant des chalcogènes. II. L'éther de diphényle et ses analogues soufré, sélénié et telluré

1979 ◽  
Vol 57 (22) ◽  
pp. 2967-2970 ◽  
Author(s):  
Gabriel Llabrès ◽  
Marcel Baiwir ◽  
Léon Christiaens ◽  
Jean-Louis Piette
Keyword(s):  
Crystal Structure ◽  
Theoretical Calculations ◽  
Heavy Atom ◽  
Mesomeric Effect ◽  
Heavy Atom Effect ◽  
Inductive Effects ◽  
Structure Determinations ◽  
Résonance Magnétique ◽  
Atom Effect ◽  
Good Agreement

The 1Hmr study of the title compounds has revealed a screw conformation, with defined interconversion processes, in good agreement with crystal structure determinations and theoretical calculations. The mesomeric effect of the heteroatom is smaller than in the anisole series, due to steric inhibitions.The 13Cmr enhances, to some extent, these conclusions. In the case of Te compounds, a heavy atom effect adds to the classical mesomeric and inductive effects to account for the experimental observations.

Crystal structure, thermodynamic properties and detonation characterization of bis(5-amino-1,2,4-triazol-3-yl)methane

2020 ◽  
Vol 76 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Hongya Li ◽  
Biao Yan ◽  
Haixia Ma ◽  
Zhiyong Sun ◽  
Yajun Ma ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Detonation Velocity ◽  
Theoretical Calculations ◽  
Detonation Pressure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Equivalent Equation ◽  
Experimental Values ◽  
Experimental Density

Bis(5-amino-1,2,4-triazol-3-yl)methane (BATZM, C5H8N8) was synthesized and its crystal structure characterized by single-crystal X-ray diffraction; it belongs to the space group Fdd2 (orthorhombic) with Z = 8. The structure of BATZM can be described as a V-shaped molecule with reasonable chemical geometry and no disorder. The specific molar heat capacity (Cp,m ) of BATZM was determined using the continuous Cp mode of a microcalorimeter and theoretical calculations, and the Cp,m value is 211.19 J K−1 mol−1 at 298.15 K. The relative deviations between the theoretical and experimental values of Cp,m , HT – H 298.15K and ST – S 298.15K of BATZM are almost equivalent at each temperature. The detonation velocity (D) and detonation pressure (P) of BATZM were estimated using the nitrogen equivalent equation according to the experimental density; BATZM has a higher detonation velocity (7954.87 ± 3.29 m s−1) and detonation pressure (25.72 ± 0.03 GPa) than TNT.

Crystal structure and theoretical calculations of Julocrotine, a natural product with antileishmanial activity

2007 ◽  
Vol 108 (3) ◽  
pp. 513-520 ◽  
Author(s):  
Rafael Y. O. Moreira ◽  
Davi S. B. Brasil ◽  
Cláudio N. Alves ◽  
Giselle M. S. P. Guilhon ◽  
Lourivaldo S. Santos ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Natural Product ◽  
Theoretical Calculations ◽  
Antileishmanial Activity

scholarly journals Crystal structure and theoretical calculations ofN-(2,2-diphenylacetyl)-N′-(naphthalen-1yl)thiourea

2008 ◽  
Vol 64 (a1) ◽  
pp. C445-C446
Author(s):  
H. Arslan ◽  
D.S. Mansuroglu ◽  
D. VanDerveer ◽  
G. Binzet ◽  
N. Kulcu
Keyword(s):  
Crystal Structure ◽  
Theoretical Calculations
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