Nuclear magnetic shieldings in solution: Gauge invariant atomic orbital calculation using the polarizable continuum model
Nuclear magnetic shieldings in solution: Gauge invariant atomic orbital calculation using the polarizable continuum model
复制标题
溶液中的核磁屏蔽：使用可极化连续介质模型进行规范不变原子轨道计算
DOI：
10.1063/1.478674
复制
发表时间：
1999
影响因子：
4.4
通讯作者：
J. Tomasi
中科院分区：
文献类型：
--
作者：
R. Cammi;B. Mennucci;J. Tomasi
We present the gauge invariant atomic orbital (GIAO) calculation of nuclear magnetic shieldings for solvated molecules described within the polarizable continuum model (PCM). The performance of the PCM-GIAO approach is tested in a benchmark calculation of isotropic 13C, 15N, and 17O shielding constants for CH3CN and CH3NO2 in vacuo and in water, both at the Hartree–Fock and density functional levels of theory. Various aspects of the calculation of solvent effects on these properties, such as the dependence on the basis set, the electron correlation, and the size of the molecular cavity embedding the solute, are taken into account and discussed. An interpretation of the gas-to-solution shielding variations in terms of a combined action of the solvent reaction field and the shielding polarizabilities is also given.
