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Ab initio QM calculation of the electric field convergence versus atomic basis sets in periodic models of proton‐substituted zeolites
Author(s) -
Larin A. V.,
Trubnikov D. N.,
Vercauteren D. P.
Publication year - 2007
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.21434
Subject(s) - chabazite , ab initio , chemistry , basis (linear algebra) , basis set , electric field , proton , zeolite , root mean square , molecule , computational chemistry , molecular physics , atomic physics , physics , quantum mechanics , density functional theory , mathematics , geometry , organic chemistry , catalysis
Electrostatic potential (EP) and electric field (EF) values are calculated in periodic models of proton‐substituted brewsterite (HBRE) and chabazite (HCHA) zeolite forms using the periodic DFT (PDFT) hybrid B3LYP level with 13 different basis sets. Relative root mean square differences between the EP, or EF, values estimated between the different basis sets are evaluated in several spatial domains available for adsorbate molecules in both zeolites. In these areas, the EF increase in HCHA is evaluated relative to all‐siliceous CHA. The EP is interpreted in terms of ionicity of the framework. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2007