首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Nuclear magnetic resonance J coupling constant polarizabilities of hydrogen peroxide: A basis set and correlation study
Authors:Hanna Kjær  Monia R Nielsen  Gabriel I Pagola  Marta B Ferraro  Paolo Lazzeretti  Stephan P A Sauer
Institution:1. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK‐2100 Copenhagen ?, Denmark;2. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria, Pabellon 1, (1428) Buenos Aires, Argentina;3. Dipartimento di Chimica dell'Università degli Studi di Modena e Reggio Emilia, Via Campi 183, 41124 Modena, Italy
Abstract:In this article, we present the so far most extended investigation of the calculation of the coupling constant polarizability of a molecule. The components of the coupling constant polarizability are derivatives of the nuclear magnetic resonance (NMR) indirect nuclear spin–spin coupling constant with respect to an external electric field and play an important role for both chiral discrimination and solvation effects on NMR coupling constants. In this study, we illustrate the effects of one‐electron basis sets and electron correlation both at the level of density functional theory as well as second‐order polarization propagator approximation for the small molecule hydrogen peroxide, which allowed us to perform calculations with the largest available basis sets optimized for the calculation of NMR coupling constants. We find a systematic but rather slow convergence with the one‐electron basis set and that augmentation functions are required. We observe also large and nonsystematic correlation effects with significant differences between the density functional and wave function theory methods. © 2012 Wiley Periodicals, Inc.
Keywords:spin–  spin coupling constant polarizability  nuclear magnetic resonance  chiral discrimination  basis set  second‐order polarization propagator
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号