Raman Spectroscopic Investigations of Noncovalent Interactions between Pyrimidine and Hydrogen Bonded Networks

2010 ◽  
Author(s):  
Ashley M. Wright ◽  
Austin A. Howard ◽  
Gregory S. Tschumper ◽  
Nathan I. Hammer ◽  
P. M. Champion ◽  
...  
Keyword(s):  
Noncovalent Interactions ◽  
Raman Spectroscopic ◽  
Spectroscopic Investigations ◽  
Hydrogen Bonded

IR AND RAMAN SPECTROSCOPIC INVESTIGATIONS OF Cr2O3-TeO2-B2O3-SrO GLASSES

2004 ◽  
Vol 18 (09) ◽  
pp. 367-373 ◽  
Author(s):  
I. ARDELEAN ◽  
N. MUREŞAN ◽  
P. PĂŞCUŢĂ
Keyword(s):  
Raman Spectra ◽  
Glass Network ◽  
Ir And Raman Spectra ◽  
Structural Units ◽  
Raman Spectroscopic ◽  
Chromium Ions ◽  
Spectroscopic Investigations ◽  
Ir And Raman

The Cr 2 O 3 content influence on the structure of 70 TeO 2·25 B 2 O 3·5 SrO glasses, was investigated by infrared and Raman spectroscopies. The results show that BO 3 and BO 4 are among the main structural units in the investigated glasses, together with TeO 3 and TeO 4 units. The presence of chromium ions located in the glass network is well evidenced in the IR and Raman spectra.

scholarly journals Noncovalent Bonds, Spectral and Thermal Properties of Substituted Thiazolo[2,3-b][1,3]thiazinium Triiodides

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 506 ◽  
Author(s):  
Irina Yushina ◽  
Natalya Tarasova ◽  
Dmitry Kim ◽  
Vladimir Sharutin ◽  
Ekaterina Bartashevich
Keyword(s):  
Electron Density ◽  
Noncovalent Interactions ◽  
Material Design ◽  
Spectroscopic Properties ◽  
Structural Features ◽  
Halogen Bonds ◽  
X Ray Diffraction ◽  
Raman Spectroscopic ◽  
Pairwise Interactions ◽  
Noncovalent Bonds

The interrelation between noncovalent bonds and physicochemical properties is in the spotlight due to the practical aspects in the field of crystalline material design. Such study requires a number of similar substances in order to reveal the effect of structural features on observed properties. For this reason, we analyzed a series of three substituted thiazolo[2,3-b][1,3]thiazinium triiodides synthesized by an iodocyclization reaction. They have been characterized with the use of X-ray diffraction, Raman spectroscopy, and thermal analysis. Various types of noncovalent interactions have been considered, and an S…I chalcogen bond type has been confirmed using the electronic criterion based on the calculated electron density and electrostatic potential. The involvement of triiodide anions in the I…I halogen and S…I chalcogen bonding is reflected in the Raman spectroscopic properties of the I–I bonds: identical bond lengths demonstrate different wave numbers of symmetric triiodide vibration and different values of electron density at bond critical points. Chalcogen and halogen bonds formed by the terminal iodine atom of triiodide anion and numerous cation…cation pairwise interactions can serve as one of the reasons for increased thermal stability and retention of iodine in the melt under heating.

Progress of Raman spectroscopic investigations on the structure and properties of coal

2020 ◽  
Vol 51 (9) ◽  
pp. 1874-1884
Author(s):  
Yanmei Xu ◽  
Xia Chen ◽  
Liang Wang ◽  
Ke Bei ◽  
Junliang Wang ◽  
...  
Keyword(s):  
Structure And Properties ◽  
Raman Spectroscopic ◽  
Spectroscopic Investigations
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