Refinement of a Valence Force Field for Polytetrafluoroethylene by a Damped Least‐Squares Method

1970 ◽  
Vol 52 (9) ◽  
pp. 4826-4829 ◽  
Author(s):  
F. J. Boerio ◽  
J. L. Koenig
Keyword(s):  
Force Field ◽  
Least Squares ◽  
Least Squares Method ◽  
Valence Force ◽  
Valence Force Field ◽  
Damped Least Squares

Schwingungsspektren und Kraftkonstanten der Hexacyano-Komplexe des Mangan(I), Technetium(I) und Rhenium(I) / Vibrational Spectra and Force Constants of the Hexacyano Complexes of Mangan(l), Technicium(I) and Rhenium(l)

1972 ◽  
Vol 27 (8-9) ◽  
pp. 1193-1196 ◽  
Author(s):  
W. Krasser ◽  
K. Schwochau
Keyword(s):  
Force Field ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Point Group ◽  
Force Constants ◽  
Irreducible Representations ◽  
Infrared And Raman Spectra ◽  
Valence Force ◽  
Valence Force Field ◽  
Complex Salts

The infrared and Raman spectra of the complex salts K5[Mn(CN)6], K5[Tc(CN)6] and K5[Re(CN)s] have been recorded in the range from 4000 to 40 cm-1. All expected fundamental vibrations have been observed and could be assigned to the irreducible representations of the sym­metry point group Oh . The calculation of the force constants is based on the concept of the generalized valence force field. The low CN-valence force constants indicate the relatively strong Π-bonding character of the metal carbon bond, which is especially pronounced for K5[Tc(CN)6).

Vibrational Spectra, Assignments, and Valence Force Field for S-nitrosocysteine and Isotopic Analogs

1984 ◽  
Vol 38 (2) ◽  
pp. 200-203 ◽  
Author(s):  
D. Michael Byler ◽  
Heino Susi ◽  
Walter V. Gerasimowicz
Keyword(s):  
Force Field ◽  
Vibrational Spectra ◽  
Valence Force ◽  
Valence Force Field
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