scholarly journals Molecular Orbital Interpretation of Infrared Absorption Frequencies. I. Selection of HMO Hetero-atomic Parameters

1970 ◽  
Vol 18 (10) ◽  
pp. 2013-2017 ◽  
Author(s):  
YUKIO ONO ◽  
YO UEDA
Keyword(s):  
Molecular Orbital ◽  
Infrared Absorption ◽  
Absorption Frequencies ◽  
Selection Of ◽  
Atomic Parameters

3,5-Dialkyl Phenols and Their Allyl Substitution Products: Infrared Absorption Spectra and Interpretation of Characteristic Frequency Shifts

1970 ◽  
Vol 53 (2) ◽  
pp. 275-287
Author(s):  
J -Y T Chen ◽  
Nancy C Oates ◽  
David Firestone
Keyword(s):  
Absorption Spectra ◽  
Infrared Spectra ◽  
Infrared Absorption ◽  
Characteristic Frequency ◽  
Frequency Shifts ◽  
Mass Effects ◽  
Infrared Absorption Spectra ◽  
Absorption Frequencies ◽  
Allyl Substitution

Abstract The infrared spectra of five 3,5-dialkyl phenols, six 2-allyl-3,5-dialkyl phenols, and five 4-allyl-3,5-dialkyl phenols are presented. The characteristic infrared absorption frequencies are tabulated in correlation charts. The hyperconjugation and mass effects of substituent groups are discussed.

Spektroskopisches Verhalten von o-substituierten Arylvinylpyryliumperchloraten / Spectroscopic Behaviour of o-substituted Arylvinylpyrylium Perchlorates

1969 ◽  
Vol 24 (8) ◽  
pp. 970-972 ◽  
Author(s):  
G. Arnold ◽  
G. Paal ◽  
H.-P. Vollmer
Keyword(s):  
Absorption Band ◽  
Infrared Absorption ◽  
Structural Changes ◽  
Visible Region ◽  
Mesomeric Effect ◽  
Spectroscopic Behaviour ◽  
Absorption Frequencies

The influence of the substituents on the characteristic infrared absorption frequencies and the wavelength of the absorption band in the visible region of o-substituted 2 [β-n-amyl-styryl] -1-benzopyrylium perchlorates and 3[β-n-amyl-1-naphthylvinyl]naphtho[2.1-b]pyrylium perchlorates has been investigated. The observed structural changes have been discussed as a function of the mesomeric effect of the substituents.

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