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Optimized basis sets for the calculation of indirect nuclear spin-spin coupling constants involving the atoms B, Al, Si, P, and Cl

机译:用于计算涉及原子B,Al,Si,P和Cl的间接核自旋-自旋耦合常数的优化基础集

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摘要

The aug-cc-pVTZ-J series of basis sets for indirect nuclear spin-spin coupling constants has been extended to the atoms B, Al, Si, P, and Cl. The basis sets were obtained according to the scheme previously described by Provasi [J. Chem. Phys. 115, 1324 (2001)]. First, the completely uncontracted correlation consistent aug-cc-pVTZ basis sets were extended with four tight s and three tight d functions. Second, the s and p basis functions were contracted with the molecular orbital coefficients of self-consistent-field calculations performed with the uncontracted basis sets on the simplest hydrides of each atom. As a first illustration, we have calculated the one-bond indirect spin-spin coupling constants in BH_4~-, BF, AlH, AlF, SiH_4, SiF_4, PH_3, PF_3, H_2 S, SF_6, HCl, and ClF at the level of density functional theory using the Becke three parameter Lee-Yang-Parr and the second order polarization propagator approximation with coupled cluster singles and doubles amplitudes.
机译:用于间接核自旋-自旋耦合常数的aug-cc-pVTZ-J系列基集已扩展到原子B,Al,Si,P和Cl。基础集是根据Provasi先前描述的方案获得的。化学物理115,1324(2001)]。首先,利用四个紧s和三个紧d函数扩展了完全无契约的相关一致aug-cc-pVTZ基集。第二,将s和p基函数与自洽场计算的分子轨道系数进行收缩,这些自洽场计算是通过对每个原子的最简单氢化物进行非契约基集进行的。作为第一个说明,我们计算了BH_4〜-,BF,AlH,AlF,SiH_4,SiF_4,PH_3,PF_3,H_2 S,SF_6,HCl和ClF的单键间接自旋耦合常数。密度泛函理论,使用Becke三参数Lee-Yang-Parr和具有耦合簇单峰和双峰振幅的二阶偏振传播器逼近。

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