Comparison of ab Initio and DFT Methods for Studying Chain Propagation and Chain Termination Processes with Group 4 Polymerization Catalysts. 1. Theansa-Bis(cyclopentadienyl)zirconium Catalyst

2002 ◽  
Vol 21 (23) ◽  
pp. 4939-4949 ◽  
Author(s):  
Giovanni Talarico ◽  
Arno N. J. Blok ◽  
Tom K. Woo ◽  
Luigi Cavallo
Keyword(s):  
Ab Initio ◽  
Chain Termination ◽  
Chain Propagation ◽  
Polymerization Catalysts ◽  
Dft Methods ◽  
Group 4 ◽  
Ab Initio And Dft

Theoretical study of the adsorption of isobutane over H-mordenite zeolite by ab initio and DFT methods

2003 ◽  
Vol 200 (1-2) ◽  
pp. 205-212 ◽  
Author(s):  
L.A Garcı́a-Serrano ◽  
C.A Flores-Sandoval ◽  
I.P Zaragoza
Keyword(s):  
Ab Initio ◽  
Theoretical Study ◽  
Dft Methods ◽  
Ab Initio And Dft

scholarly journals Динамические поляризуемости двухатомных молекул: сравнение методов ab initio и теории функционала плотности с методом замещенной функции Грина теории квантового дефекта

2019 ◽  
Vol 127 (11) ◽  
pp. 736
Author(s):  
А.С. Корнев ◽  
К.И. Суворов ◽  
В.Е. Чернов ◽  
И.В. Копытин ◽  
Б.А. Зон
Keyword(s):  
Ab Initio ◽  
Excited States ◽  
Density Functional ◽  
Ab Initio Methods ◽  
Test Results ◽  
Dft Methods ◽  
Functional Theory ◽  
Frequency Dependent ◽  
Quantum Defect Theory ◽  
Ab Initio And Dft

The quantum defect theory is used to test the accuracy of ab initio methods and density functional theory (DFT) in calculating the frequency-dependent polarizabilities of diatomic molecules. We confine ourselves to testing only those variants of these methods that are most accurate for calculating static polarizabilities. The test results show that one of the main errors of the ab initio and DFT methods is associated with inaccuracies in determining the energies of excited states, where frequency-dependent polarizabilities have resonance maxima.

Prediction models for the Abraham hydrogen bond donor strength: comparison of semi-empirical, ab initio , and DFT methods

2011 ◽  
Vol 24 (11) ◽  
pp. 1072-1080 ◽  
Author(s):  
Johannes A. H. Schwöbel ◽  
Ralf-Uwe Ebert ◽  
Ralph Kühne ◽  
Gerrit Schüürmann
Keyword(s):  
Hydrogen Bond ◽  
Ab Initio ◽  
Prediction Models ◽  
Hydrogen Bond Donor ◽  
Dft Methods ◽  
Semi Empirical ◽  
Ab Initio And Dft
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