Infrared spectra and the nature of the hydrogen bonding in solvates of the alkali metal fluorides

1967 ◽  
Vol 8 (2) ◽  
pp. 221-223 ◽  
Author(s):  
T. D. Fedotova ◽  
A. A. Opalovskii ◽  
Z. A. Grankina ◽  
E. V. Sobolev
Keyword(s):  
Hydrogen Bonding ◽  
Alkali Metal ◽  
Infrared Spectra ◽  
Metal Fluorides

Raman Spectra of Solid (NH4)2CrO4 and (ND4)2CrO4 Obtained by a Rotating Cell Technique

1976 ◽  
Vol 30 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Robert L. Carter ◽  
L. Kevin O'Hare
Keyword(s):  
Hydrogen Bonding ◽  
Alkali Metal ◽  
Raman Spectra ◽  
Sampling Technique ◽  
Solid Sampling ◽  
Monoclinic Structure ◽  
Ammonium Ions ◽  
Cylindrical Cell ◽  
Sample Rotation ◽  
Rotation Technique

The Raman spectra of polycrystalline (NH4)2CrO4 and (ND4)2CrO4 have been obtained by a sample rotation technique where the uncompressed solid is contained in a glass cylindrical cell. The apparatus is a commerically available sample rotator for liquids, which was modified for the described solid sampling technique. The Raman spectra of (NH4)2CrO4 and (ND4)2CrO4 are discussed in relation to their uniquely monoclinic structure, in contrast to the β-K2SO4 structure found for (NH4)2SO4 and many alkali metal chromates and sulfates. The hydrogen bonding in (NH4)2CrO4 is described, and its role in determining both the structure and the Raman spectra is discussed. The data suggest a barrier to NH4+ rotation of approximately 3.70 kcal/mol, indicating that the ammonium ions are not freely rotating on the time scale of the Raman experiment (10−13 sec).

Isotropic and anisotropic Raman scattering from molten alkali-metal fluorides

2000 ◽  
Vol 2 (9) ◽  
pp. 2021-2025 ◽  
Author(s):  
V. Dracopoulos ◽  
G. N. Papatheodorou
Keyword(s):  
Alkali Metal ◽  
Raman Scattering ◽  
Metal Fluorides

ChemInform Abstract: Alkali Metal Fluorides Supported on Fluorinated γ-Alumina, Lewis Base, and Catalytic Properties.

ChemInform ◽  
2010 ◽  
Vol 23 (5) ◽  
pp. no-no
Author(s):  
T. BAIRD ◽  
A. BENDADA ◽  
G. WEBB ◽  
J. M. WINFIELD
Keyword(s):  
Alkali Metal ◽  
Catalytic Properties ◽  
Lewis Base ◽  
Metal Fluorides

Difluoramine: Preparation of Difluorodiazine and Addition Compounds with Alkali Metal Fluorides

1965 ◽  
Vol 4 (1) ◽  
pp. 118-119 ◽  
Author(s):  
Emil A. Lawton ◽  
Donald Pilipovich ◽  
R. D. Wilson
Keyword(s):  
Alkali Metal ◽  
Metal Fluorides

Hydrogen bonding and conformation in cis- and trans-2-alkoxy-3-hydroxytetrahydrofurans

1968 ◽  
Vol 46 (1) ◽  
pp. 21-24 ◽  
Author(s):  
W. W. Zajac Jr. ◽  
F. Sweet ◽  
R. K. Brown
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectra ◽  
Hydroxyl Absorption ◽  
Cis And Trans ◽  
In Cis ◽  
Infrared Data ◽  
Hydrogen Bonded

Infrared spectra show both free and hydrogen bonded hydroxyl absorption in several trans-2-alkoxy-3-hydroxytetrahydrofurans. The extent of non-bonded hydroxyl is greater than that of bonded hydroxyl. Suggestions are made of possible conformations which might account for the infrared data.

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