STUDIES ON THE INFRARED SPECTRA OF A MERCAPTOTRIAZOLE AND MERCAPTOTHIAZOLINE AND THEIR ADSORPTION ON SILVER IODIDE

1962 ◽  
Vol 40 (11) ◽  
pp. 2110-2121 ◽  
Author(s):  
L. H. Little ◽  
R. H. Ottewill

An investigation has been carried out on the infrared spectra of 3-mercapto-4-methyl-5-ethyl-1,2,4-triazole and 2-mercaptothiazoline, both in solution and in the crystalline form. The spectra of the deuterated compounds and the silver salts have also been examined. The results allow some assignment of bands to be made. The spectra of these compounds adsorbed on silver iodide were then examined. It would appear that in the concentration range examined physical adsorption occurs.

1962 ◽  
Vol 39 (12) ◽  
pp. 639 ◽  
Author(s):  
William A. Bonner ◽  
Joseph I. DeGraw

1977 ◽  
Vol 31 (3) ◽  
pp. 230-236 ◽  
Author(s):  
R. N. Bhargava ◽  
R. A. Condrate

Infrared and Raman spectra were measured and interpreted for two crystalline VPO5 phases (α- and β-VPO5) and several related vanadium phosphate glasses. The spectral results for the crystalline phases were consistent with those predicted by factor group analysis using the previously determined space groups. Empirical band assignments were made for the observed bands on the basis of the bands observed earlier for related phosphate and oxyvanadium compounds. Also, the band assignments made for the infrared spectra of the glasses were consistent with the assignments for crystalline V2O5 and the two crystalline VPO5 phases. No Raman spectra were observed for the glasses because processes involving adsorption and Rayleigh scattering dominated over Raman scattering. The infrared spectra of vanadium phosphate glasses with high P2O5 concentrations possessed many features resembling those observed in the infrared spectra of α-VPO5, suggesting similarities in the short range order for the two materials. Analyses of the vibrational spectra of hydrated α-VPO5 samples suggests that the water molecules are adsorbed in the interlamellar spaces of the crystals, complexing to vanadium ions. Initial steps in the hydration of vanadium phosphate glasses apparently involve physical adsorption of water on their surfaces. No water adsorption could be detected for β-VPO5 under normal conditions from its infrared and Raman spectra.


1925 ◽  
Vol 29 (8) ◽  
pp. 942-954 ◽  
Author(s):  
J. S. Beekley ◽  
H. S. Taylor
Keyword(s):  

1968 ◽  
Vol 46 (20) ◽  
pp. 3255-3261 ◽  
Author(s):  
M. J. D. Low ◽  
V. V. Subba Rao

Infrared spectra were recorded of pyridine (PY) sorbed on highly dehydroxylated, deuterated, and fluoridated porous glass, as well as on pure silica and boria-impregnated silica. The hydrogen atoms of sorbed PY exchange with surface OD groups. Physical adsorption occurs by hydrogen bonding of PY to SiOH and B—OH groups via the PY nitrogen atom; there is some interaction of the ring π system with OH groups. Surface B:PY complexes form by coordination of PY to boron; the B:PY may be hydrogen bonded to B—OH groups. Some PY dissociates, and OH groups are generated.


2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...


1895 ◽  
Vol 39 (997supp) ◽  
pp. 15937-15938
Author(s):  
Leon Warnerke
Keyword(s):  

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