scholarly journals Electronic Structures, Electronic Spectra, and Aromatic Characteristics of Peri-Condensed Tetracyclic Nonbenzenoid Aromatic Hydrocarbons Containing a Naphthalene Nucleus

1971 ◽  
Vol 44 (3) ◽  
pp. 682-686 ◽  
Author(s):  
Hiroyuki Yamaguchi ◽  
Takeshi Nakajima
Keyword(s):  
Aromatic Hydrocarbons ◽  
Electronic Spectra ◽  
Electronic Structures

scholarly journals The Electronic Spectra and Electronic Structures of the Nitrobenzene and Nitrotoluene Anions

1963 ◽  
Vol 36 (10) ◽  
pp. 1357-1362 ◽  
Author(s):  
Akira Ishitani ◽  
Keiji Kuwata ◽  
Hiroshi Tsubomura ◽  
Saburo Nagakura
Keyword(s):  
Electronic Spectra ◽  
Electronic Structures

Formation of the Radical Cations of Some Tetracyclic Aromatic Hydrocarbons in Boric Acid Glass

1974 ◽  
Vol 52 (5) ◽  
pp. 827-828 ◽  
Author(s):  
Z. H. Khan ◽  
B. N. Khanna
Keyword(s):  
Boric Acid ◽  
Aromatic Hydrocarbons ◽  
Electronic Spectra ◽  
Radical Cations ◽  
Close Resemblance

The radical cations of tetracene, chrysene, 1,2-benzanthracene, and 3,4-benzphenanthrene have been produced in boric acid glass by u.v. irradiation. Their electronic spectra are recorded in the region 200–1400 nm and show a close resemblance to the available data for the cations reported earlier.

Substituent effects on the electronic spectra of aromatic hydrocarbons I. A comparison of the localized-orbital and iso-conjugate-hydrocarbon models for interpreting the spectra of amino- and nitrobenzenes

1964 ◽  
Vol 278 (1372) ◽  
pp. 57-63 ◽  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Configuration Interaction ◽  
Electronic Spectra ◽  
Substituent Effects ◽  
Phenyl Group ◽  
Zero Order ◽  
Wave Functions ◽  
Localized Orbital

Two models are used to analyze the spectra of aniline and nitrobenzene. These are the localized-orbital model, in which there is no delocalization of the electrons between the phenyl group and the substituent, and the iso-conjugate-hydrocarbon model, in which there is complete delocalization. Neither model is very satisfactory with zero-order wave functions and energies. Both give a satisfactory interpretation of the spectra if configuration interaction is taken into account but the localized-orbital model is rather better for calculating energies. The localized-orbital model is also more readily applied to polysubstituted benzenes.

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