Strongly hydrogen-bonded molecular solid, isonicotinic acid: Raman spectra of the -C16O2H and -C16O2D species and infrared and Raman spectra of the -C18O2H acid

1988 ◽  
Vol 92 (12) ◽  
pp. 3379-3386 ◽  
Author(s):  
E. Spinner
Keyword(s):  
Raman Spectra ◽  
Isonicotinic Acid ◽  
Infrared And Raman Spectra ◽  
Molecular Solid ◽  
Hydrogen Bonded

A vibrational study of tautomerism and associations of 2-mercaptoimidazole and 2-mercaptothiazole

1989 ◽  
Vol 54 (8) ◽  
pp. 2045-2053 ◽  
Author(s):  
Jesús Perez-Peña ◽  
Melchor Gonzalez-Davila ◽  
Miguel Suarez-Tangil ◽  
Joaquin Hernandez-Brito
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Thermodynamic Functions ◽  
Infrared And Raman Spectra ◽  
Dilute Solutions ◽  
Vibrational Study ◽  
Combination Bands ◽  
General Assignment ◽  
Hydrogen Bonded

Infrared and Raman spectra of 2-mercaptoimidazole and 2-mercaptothiazole in solid state as well as i.r. spectra of 2-mercaptothiazole in HCCl3 and CS2 0.05M solutions have been investigated. A general assignment of all the observed bands is proposed for both fundamental vibrations and for overtone and combination bands. For 2-mercaptothiazole, the thiocarbonyl-form, intermolecularly hydrogen-bonded dimers in solid state, and unassociated molecules in dilute solutions of inert solvents have been established. Finally, based on this data, thermodynamic functions have been computed.

Complex hydrogen bonded cations. The benzimidazole benzimidazolium cation

1976 ◽  
Vol 54 (15) ◽  
pp. 2470-2481 ◽  
Author(s):  
B. Borah ◽  
J L. Wood
Keyword(s):  
Raman Spectra ◽  
Asymmetric Structure ◽  
Infrared And Raman Spectra ◽  
X Ray ◽  
Proton Potential ◽  
Complex Salts ◽  
Structure In Solution ◽  
Hydrogen Bonded

The complex salts (Bz2H)+Y−, Bz = benzimidazole, Y = PF6− or BF4− have been identified in solution, and the molecularity of the fluoroborate, which has been crystallised, confirmed gravimetrically. Infrared and Raman spectra, together with those of the deuterated systems, indicate a similar structure in solution and the crystal, viz., an asymmetric single minimum bridging proton potential, in conformity with the X-ray structure, proving that the pronounced doublet observed in the vs band of the H bridged system is not due to proton tunnelling. The origin of the asymmetric structure is discussed.

Vibration spectra of sulphur tetranitride

1981 ◽  
Vol 46 (11) ◽  
pp. 2613-2619 ◽  
Author(s):  
Jiří Toužín
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Normal Coordinate Analysis ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Vibration Spectra

Available data on infrared and Raman spectra of S4N4 in solid state and solutions have been verified and completed. On the basis of normal coordinate analysis an attempt has been made to define with more precision the interpretation of vibration spectra of this compound given in earlier reports.

Vibrational spectra of aquadioxotetra; peroxodivanadates(V) M2[V2O2(O2)4(H2O)]·xH2O (M = N(CH3)4, Cs)

1990 ◽  
Vol 55 (6) ◽  
pp. 1485-1490 ◽  
Author(s):  
Peter Schwendt ◽  
Milan Sýkora
Keyword(s):  
Raman Spectra ◽  
Vibrational Spectra ◽  
Normal Coordinate Analysis ◽  
Force Constants ◽  
Infrared And Raman Spectra ◽  
Empirical Correlations ◽  
Normal Coordinate ◽  
Bond Lengths ◽  
Stretching Vibrations

The infrared and Raman spectra of M2[V2O2(O2)4(H2O)]·xH2O and M2[V2O2(O2)4(D2O)]·xD2O (M = N(CH3)4, Cs) were measured. In the region of the vanadium-oxygen stretching vibrations, the spectra were interpreted based on normal coordinate analysis, employing empirical correlations between the bond lengths and force constants.

Infrared and Raman Spectra, conformations,ab initio calculations and spectral assignments of 1,3-disilabutane (SiH3CH2SiH2CH3)

2007 ◽  
Vol 38 (9) ◽  
pp. 1159-1173 ◽  
Author(s):  
Gamil A. Guirgis ◽  
Paul M. Mazzone ◽  
Daniel N. Pasko ◽  
Peter Klaeboe ◽  
Anne Horn ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Raman Spectra ◽  
Infrared And Raman Spectra
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