We present a new local density functional, called M06-L, for main-group and transition element thermochemistry, thermochemical kinetics, and noncovalent interactions. The functional is designed to capture the main dependence of the exchange-correlation energy on local spin density, spin density gradient, and spin kinetic energy density, and it is parametrized to satisfy the uniform-electron-gas limit and to have good performance for both main-group chemistry and transition metal chemistry. The M06-L functional and 14 other functionals have been comparatively assessed against 22 energetic databases. Among the tested functionals, which include the popular B3LYP, BLYP, and BP86 functionals as well as our previous M05 functional, the M06-L functional gives the best overall performance for a combination of main-group thermochemistry, thermochemical kinetics, and organometallic, inorganometallic, biological, and noncovalent interactions. It also does very well for predicting geometries and vibrational frequencies. Because of the computational advantages of local functionals, the present functional should be very useful for many applications in chemistry, especially for simulations on moderate-sized and large systems and when long time scales must be addressed.
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21 November 2006
Research Article|
November 15 2006
A new local density functional for main-group thermochemistry, transition metal bonding, thermochemical kinetics, and noncovalent interactions
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Yan Zhao;
Yan Zhao
a)
Department of Chemistry,
University of Minnesota
, Minneapolis, Minnesota 55455-0431 and Supercomputing Institute, University of Minnesota
, Minneapolis, Minnesota 55455-0431
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Donald G. Truhlar
Donald G. Truhlar
Department of Chemistry,
University of Minnesota
, Minneapolis, Minnesota 55455-0431 and Supercomputing Institute, University of Minnesota
, Minneapolis, Minnesota 55455-0431
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a)
Electronic mail: [email protected]
J. Chem. Phys. 125, 194101 (2006)
Article history
Received:
July 31 2006
Accepted:
September 28 2006
Citation
Yan Zhao, Donald G. Truhlar; A new local density functional for main-group thermochemistry, transition metal bonding, thermochemical kinetics, and noncovalent interactions. J. Chem. Phys. 21 November 2006; 125 (19): 194101. https://doi.org/10.1063/1.2370993
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