Structure and stability of the carbocations C2H3+ and C2H4X+, X = hydrogen, fluorine, chlorine, and methyl. Ab initio investigation including electron correlation and a comparison with MINDO/3 results

1978 ◽  
Vol 100 (17) ◽  
pp. 5297-5305 ◽  
Author(s):  
Hans Lischka ◽  
Hans Joachim Koehler
Keyword(s):  
Ab Initio ◽  
Electron Correlation ◽  
Structure And Stability

Quantifying electron-correlation effects in small coinage-metal clusters by ab initio calculations

2021 ◽  
Author(s):  
Victor Giovanni de Pina ◽  
Bráulio Gabriel Alencar Brito ◽  
Guo -Q Hai ◽  
Ladir Cândido
Keyword(s):  
Monte Carlo ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Electron Correlation ◽  
Metal Clusters ◽  
Correlation Effects ◽  
Diffusion Monte Carlo ◽  
Coinage Metal ◽  
Electron Correlation Effects ◽  
Fixed Node

We investigate many-electron correlation effects in neutral and charged coinage-metal clusters Cun, Agn, and Aun (n = 1 − 4) by ab initio calculations using fixed-node diffusion Monte Carlo (FN-DMC)...

Study of the structure and stability of aqua ions La(H2O) n 3+ (n = 8, 9) by ab initio methods

2008 ◽  
Vol 53 (8) ◽  
pp. 1249-1255 ◽  
Author(s):  
V. Yu. Buz’ko ◽  
I. V. Sukhno ◽  
M. B. Buz’ko ◽  
A. A. Polushin ◽  
V. T. Panyushkin
Keyword(s):  
Ab Initio ◽  
Ab Initio Methods ◽  
Structure And Stability

Ab initio calculation of [OH−;e+] system with consideration of electron correlation effect

1994 ◽  
Vol 101 (7) ◽  
pp. 5925-5928 ◽  
Author(s):  
Masanori Tachikawa ◽  
Hiroshi Sainowo ◽  
Kaoru Iguchi ◽  
Kazunari Suzuki
Keyword(s):  
Ab Initio ◽  
Electron Correlation ◽  
Ab Initio Calculation ◽  
Correlation Effect ◽  
Electron Correlation Effect

Structure and Stability of Isomeric C2GeH7+ Ions. An ab Initio Post-SCF Study

1995 ◽  
Vol 99 (50) ◽  
pp. 17724-17728 ◽  
Author(s):  
Paola Antoniotti ◽  
Felice Grandinetti ◽  
Paolo Volpe
Keyword(s):  
Ab Initio ◽  
Structure And Stability

scholarly journals An ab initio study on the insertion reactions of CH [X2II] with NH3, H2O, and HF

1996 ◽  
Vol 74 (6) ◽  
pp. 910-917 ◽  
Author(s):  
Zhi-Xiang Wang ◽  
Ruo-Zhuang Liu ◽  
Ming-Bao Huang ◽  
Zhonghua Yu
Keyword(s):  
Ab Initio ◽  
Electron Correlation ◽  
Lower Energy ◽  
Energy Surface ◽  
Molecular Orbital Calculations ◽  
Ab Initio Study ◽  
Insertion Reactions ◽  
Moller Plesset ◽  
Ch Radical ◽  
Water Hydrogen

The mechanisms of the reactions of CH (X2II) with NH3, H2O, and HF have been studied by means of ab initio molecular orbital calculations incorporating electron correlation with Møller–Plesset perturbation theory up to the second order. For each of the three CH reactions, the insertion path has been found in the potential energy surface; in the calculated insertion path there exists an intermediate complex prior to the transition state that has a lower energy than the reactants. Energetic results indicate that insertion paths are favourable channels for these CH reactions, which is in line with proposals based on kinetic experiments. Key words: CH radical, ammonia, water, hydrogen fluoride, reaction mechanism.

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