Hyperfine coupling constants of dimethyl nitroxide in aqueous solution: Car-Parrinello molecular dynamics and discrete-continuum approaches

被引:41
作者
Pavone, M
Benzi, C
De Angelis, F
Barone, V
机构
[1] Univ Naples Federico II, Dipartimento Chim, Complesso Univ Monte S Angelo, I-80126 Naples, Italy
[2] Univ Perugia, Dipartimento Chim, ISTM, I-06123 Perugia, Italy
关键词
D O I
10.1016/j.cplett.2004.07.054
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Vibrational averaging and solvent effects on the isotropic hyperfine coupling constants of dimethyl nitroxide have been investigated by an integrated computational tool including Car-Parrinello molecular dynamics and discrete-continuum solvent models. The results allow an unbiased judgement of the role of different effects in determining the observed EPR parameters. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:120 / 126
页数:7
相关论文
共 30 条
[1]   Toward reliable density functional methods without adjustable parameters: The PBE0 model [J].
Adamo, C ;
Barone, V .
JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (13) :6158-6170
[2]   Assessment of a combined QM/MM approach for the study of large nitroxide systems in vacuo and in condensed phases [J].
Barone, V ;
Bencini, A ;
Cossi, M ;
Di Matteo, A ;
Mattesini, M ;
Totti, F .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (28) :7069-7078
[3]  
BARONE V, UNPUB
[4]   UNIFIED APPROACH FOR MOLECULAR-DYNAMICS AND DENSITY-FUNCTIONAL THEORY [J].
CAR, R ;
PARRINELLO, M .
PHYSICAL REVIEW LETTERS, 1985, 55 (22) :2471-2474
[5]   New developments in the polarizable continuum model for quantum mechanical and classical calculations on molecules in solution [J].
Cossi, M ;
Scalmani, G ;
Rega, N ;
Barone, V .
JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (01) :43-54
[6]   Accurate intermolecular potentials obtained from molecular wave functions:: Bridging the gap between quantum chemistry and molecular simulations [J].
Engkvist, O ;
Åstrand, PO ;
Karlström, G .
CHEMICAL REVIEWS, 2000, 100 (11) :4087-4108
[7]   MOLECULAR-DYNAMICS SIMULATION OF AQUEOUS MIXTURES - METHANOL, ACETONE, AND AMMONIA [J].
FERRARIO, M ;
HAUGHNEY, M ;
MCDONALD, IR ;
KLEIN, ML .
JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (07) :5156-5166
[8]   SELF-CONSISTENT MOLECULAR-ORBITAL METHODS .23. A POLARIZATION-TYPE BASIS SET FOR 2ND-ROW ELEMENTS [J].
FRANCL, MM ;
PIETRO, WJ ;
HEHRE, WJ ;
BINKLEY, JS ;
GORDON, MS ;
DEFREES, DJ ;
POPLE, JA .
JOURNAL OF CHEMICAL PHYSICS, 1982, 77 (07) :3654-3665
[9]  
FRISCH M, 2003, G03 REV B 05
[10]   First-principle molecular dynamics with ultrasoft pseudopotentials: Parallel implementation and application to extended bioinorganic systems [J].
Giannozzi, P ;
De Angelis, F ;
Car, R .
JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (13) :5903-5915