...
首页> 外文期刊>Chemical Physics Letters >Two-component coupled-cluster calculations for the hydride of element 111: on the performance of relativistic effective core potentials
【24h】

Two-component coupled-cluster calculations for the hydride of element 111: on the performance of relativistic effective core potentials

机译:元素111的氢化物的两组分耦合簇计算:论相对论有效铁心势

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

We have calculated bond lengths, harmonic vibrational frequencies, and dissociation energies for (111)H using relativistic effective core potentials (RECP) including one-electron spin-orbit operators at the Hartree-Fock and coupled-cluster levels of theory. The spectroscopic constants calculated using shape-consistent RECPs compare favorably with available four-component results, but energy-consistent RECPs are found to underestimate the spin-orbit effects. The best computed(estimated) spectroscopic constants of (111)H are 1.512(1.524) Angstrom, 2668(2647) cm(-1), and 2.87(2.77) eV for R-e, omega(e), and D-e, respectively. The calculated spin-orbit effects (+0.009 Angstrom, -113 cm(-1), and -0.64 eV) are modest, although the molecule has a closed-shell electronic structure. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 27]
机译:我们已经使用相对论有效核心电势(RECP)计算了(111)H的键长,谐波振动频率和解离能,其中包括Hartree-Fock的单电子自旋轨道算符和理论的耦合簇能级。使用形状一致的RECP计算的光谱常数与可用的四分量结果相比具有优势,但是发现能量一致的RECP低估了自旋轨道效应。 R-e,omega(e)和D-e的最佳计算(估计)光谱常数分别为1.512(1.524)埃,2668(2647)cm(-1)和2.87(2.77)eV。尽管分子具有闭壳电子结构,但计算的自旋轨道效应(+0.009埃,-113 cm(-1)和-0.64 eV)是适度的。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:27]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号