Complete Basis Set Extrapolation and Hybrid Schemes for Geometry Gradients of Noncovalent Complexes

Kód výsledku v IS VaVaI

RIV/61388963:_____/11:00373724 - isvavai.cz

Nalezeny alternativní kódy

RIV/86652036:_____/11:00373724

Výsledek na webu

http://dx.doi.org/10.1021/ct200484e

DOI - Digital Object Identifier

10.1021/ct200484e

Jazyk výsledku

angličtina

Název v původním jazyce

Complete Basis Set Extrapolation and Hybrid Schemes for Geometry Gradients of Noncovalent Complexes

Popis výsledku v původním jazyce

In this paper, we focus on the performance of popular WFT (MP2, MP2.5, MP3, SCS(MI)-MP2, CCSD(T)) and DFT (M06-2X, TPSS-D) methods in optimizations of geometries of noncovalent complexes. Apart from the straightforward comparison of the accuracy of the resulting geometries with respect to the most accurate, computationally affordable, reference method, we have also attempted to determine the most efficient utilization of the information contained in the gradient of a particular method and basis set. Essentially, we have transferred the ideas successfully used for noncovalent interaction energy calculations to geometry optimizations. We have assessed the performance of the hybrid gradients (for instance, MP2 and CCSD(T) calculated in different basis sets), investigated the possibility of extrapolating gradients calculated with a particular method in a series of systematically built basis sets, and finally compared the extrapolated gradients with the counterpoise(CP)corrected optimizatio

Název v anglickém jazyce

Complete Basis Set Extrapolation and Hybrid Schemes for Geometry Gradients of Noncovalent Complexes

Popis výsledku anglicky

In this paper, we focus on the performance of popular WFT (MP2, MP2.5, MP3, SCS(MI)-MP2, CCSD(T)) and DFT (M06-2X, TPSS-D) methods in optimizations of geometries of noncovalent complexes. Apart from the straightforward comparison of the accuracy of the resulting geometries with respect to the most accurate, computationally affordable, reference method, we have also attempted to determine the most efficient utilization of the information contained in the gradient of a particular method and basis set. Essentially, we have transferred the ideas successfully used for noncovalent interaction energy calculations to geometry optimizations. We have assessed the performance of the hybrid gradients (for instance, MP2 and CCSD(T) calculated in different basis sets), investigated the possibility of extrapolating gradients calculated with a particular method in a series of systematically built basis sets, and finally compared the extrapolated gradients with the counterpoise(CP)corrected optimizatio

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

LC512: Centrum biomolekul a komplexních molekulových systémů

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical Theory and Computation

ISSN

1549-9618

e-ISSN

—

Svazek periodika

7

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

3924-3934

Kód UT WoS článku

000298118000008

EID výsledku v databázi Scopus

—