首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Spin-Orbit Effects, VSEPR Theory, and the Electronic Structures of Heavy and Superheavy Group IVA Hydrides and Group VIIIA Tetrafluorides. A Partial Role Reversal for Elements 114 and 118
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Spin-Orbit Effects, VSEPR Theory, and the Electronic Structures of Heavy and Superheavy Group IVA Hydrides and Group VIIIA Tetrafluorides. A Partial Role Reversal for Elements 114 and 118

机译:自旋轨道效应,VSEPR理论以及重和超重IVA氢化物和VIIIA四氟化物的电子结构。元素114和118的部分角色反转

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摘要

Relativistic effective core potentials and spin-orbit operators are used in relativistic configuration interaction calculations to explore the effects of spin-orbit coupling on the electronic structures of atoms and molecules of elements 114 and 118. The monohydrides of group IVA and the tetrafluorides of group VIIIA are examined in order to provide examples of trends within families among the various periods. The spin-orbit effect is found to play a dominant role in the determination of atomic and molecular properties. Several nonintuitive consequences of spin-orbit coupling are presented, including the depiction of element 114 as a closed-shell "noble" atom and the suggestion that the VSEPR theory is inadequate to describe the geometry of the rate gas tetrafluoride, (118)F_4.
机译:相对论有效核心势和自旋轨道算子被用于相对论构型相互作用计算中,以探讨自旋轨道耦合对元素114和118的原子和分子的电子结构的影响。IVA组的一元氢化物和VIIIA组的四氟化物为了提供不同时期家庭内部趋势的实例,我们进行了调查。发现自旋轨道效应在确定原子和分子性质中起主要作用。提出了自旋轨道耦合的几种非直觉的后果,包括将元素114描述为闭壳的“贵族”原子,并提出VSEPR理论不足以描述四氟化碳气体(118)F_4的几何形状。

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