Normal Coordinate Treatment of Dimethyldiacetylene

1955 ◽  
Vol 23 (3) ◽  
pp. 579-582 ◽  
Author(s):  
Alfons Weber ◽  
Salvador M. Ferigle
Keyword(s):  
Normal Coordinate ◽  
Coordinate Treatment

Harmonic Force Field and Mean Amplitudes for C4Cl4 and C4F4 Compounds

1982 ◽  
Vol 37 (11) ◽  
pp. 1292-1294 ◽  
Author(s):  
G. Díaz
Keyword(s):  
Force Field ◽  
Vibrational Frequencies ◽  
Vibrational Assignment ◽  
Harmonic Force ◽  
Normal Coordinate ◽  
Coordinate Treatment

Normal coordinate treatment of C4F4 and C4Cl4 in the GVFF was performed using published vibrational frequencies. The vibrational assignment for these molecules is discussed. Calculated mean amplitudes for both molecules are reported.

Resonance Raman spectra

1979 ◽  
Vol 293 (1402) ◽  
pp. 287-302 ◽  
Keyword(s):  
Raman Spectra ◽  
Resonance Raman ◽  
Point Group ◽  
Group Symmetry ◽  
Normal Coordinate ◽  
Bond Lengths ◽  
Bending Force ◽  
Resonance Raman Spectra ◽  
Haem Proteins ◽  
Coordinate Treatment

Selection rules for resonance Raman spectra are given for several porphins of D 4h point group symmetry. A normal coordinate treatment is presented, based on a potential function for which stretching and bending force constants are related to bond lengths, and to the product of the bond lengths of the bonds defining the bending angle, respectively. The results can be correlated with the persistent frequencies observed in the resonance Raman spectra of haem proteins where the haem is an iron octasubstituted porphin.

Vibrational spectra and normal-coordinate treatment of cyclopentadiene and its deuterated derivatives

1975 ◽  
Vol 31 (4) ◽  
pp. 451-461 ◽  
Author(s):  
E. Castellucci ◽  
P. Manzelli ◽  
B. Fortunato ◽  
E. Gallinella ◽  
P. Mirone
Keyword(s):  
Vibrational Spectra ◽  
Normal Coordinate ◽  
Coordinate Treatment
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