Determination of electrooptical parameters of molecules with the use of nonempirical quantum-chemical calculations of absolute intensities of absorption bands in the IR region

1999 ◽  
Vol 66 (1) ◽  
pp. 15-20 ◽  
Author(s):  
L. A. Gribov ◽  
D. I. Sidelov ◽  
I. V. Maslov
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Absorption Bands ◽  
Absolute Intensities ◽  
Electrooptical Parameters

Quantum chemical calculations for the determination of the molecular structure of conjugated compounds

1979 ◽  
Vol 51 ◽  
pp. 99-105 ◽  
Author(s):  
Roland Benedix ◽  
Peter Birner ◽  
Frieder Birnstock ◽  
Horst Hennig ◽  
Hans-Jörg Hofmann
Keyword(s):  
Molecular Structure ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Conjugated Compounds

Dihydronaphthalenone Carboxylates - Spectral Characteristics and Structure

1997 ◽  
Vol 52 (5) ◽  
pp. 457-461 ◽  
Author(s):  
Sn. Bakalova ◽  
A. Georgieva ◽  
P. Nikolov ◽  
E. Stanoeva
Keyword(s):  
Ir Spectra ◽  
Quantum Chemical Calculations ◽  
Electronic Spectra ◽  
Quantum Chemical ◽  
Substituent Effect ◽  
Methyl Esters ◽  
Spectral Characteristics ◽  
Absorption Bands ◽  
Tautomeric Forms ◽  
Luminescence Characteristics

Abstract The absorption and luminescence characteristics of a group of newly synthesized methyl esters of 2-alkyl (p-substituted-aryl) -aminomethylene-3,4-dihydro-1(2 H)-naphthalenone-4-carboxylic acids have been investigated. The studied compounds may exist in three tautomeric forms. On the basis of comparison of their electronic spectra to those of similar substances, the observed substituent effect on the position of the UV-VIS absorption bands, the IR spectra and the results of PPP-SCF-CI quantum-chemical calculations it is concluded that the keto tautomer predominates in solution.

On the error of approximations in quatum mechanics II. Some particular applications

1965 ◽  
Vol 257 (1081) ◽  
pp. 327-349 ◽  
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Preceding Paper ◽  
Quantum Mechanical Calculation ◽  
Quantum Mechanical ◽  
Mechanical Calculation ◽  
Matrix Calculus ◽  
General Basis ◽  
The Common

In the preceding paper (Hoffmann 1965) the author has developed the general basis of the estimation of the error in a quantum -mechanical calculation. The method based on the properties of the common trace-forming procedure in matrix calculus allowed the determination of the next approximating steps in a steepest descent process. The present paper supplies the results of applying the method to some cases usually applied in quantum -mechanical and quantum -chemical calculations.

Quantum Chemical Calculations of1JCCCoupling Constants for the Stereochemical Determination of Organic Compounds

2013 ◽  
Vol 15 (3) ◽  
pp. 654-657 ◽  
Author(s):  
Giuseppe Bifulco ◽  
Raffaele Riccio ◽  
Gary E. Martin ◽  
Alexei V. Buevich ◽  
R. Thomas Williamson
Keyword(s):  
Quantum Chemical Calculations ◽  
Organic Compounds ◽  
Quantum Chemical
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