轨道对称性作为一种工具,用于理解Krossing的离子体中的结合
1Swiss Center for Scientific Computing, CSCS, Swiss Federal Institute of Technology, ETH Zürich, CH-6928 Manno, Switzerland.
Journal of the American Chemical Society
|October 10, 2002
概括
这项研究揭示了分子间力量,而不是分子内力量,决定了带有P4环的银 (I) 复合体的平面结构. 结合分析还显示了银复合体中P4和乙烯联体之间的相似性.
科学领域:
- 无机化学 无机化学
- 计算化学计算化学
- 量子化学 是一个量子化学.
背景情况:
- 调查了银的意想不到的平面协调几何学 (I) 在十字路口的子,Ag (eta) -P (4)) (2) (+) 中.
- 检查了这种的溶液和固态中观察到的D(2h) 对称性.
研究的目的:
- 使用先进的计算方法阐明Ag的几何和电子结构.
- 了解金属-连接体结合的性质以及影响观察到平面协调的因素.
- 为了比较Ag(eta(2) -P(4)) 的结合与Ag(C(2) H(4)) 的结合.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 基于轨道对称性的能量分解分析.
- 与先前的研究和相关复合物的比较,如Ag{C}{2}H{4}{2}+).
主要成果:
- 静电相互作用比轨道相互作用更有助于键能.
- 银的5s和5p轨道作为接受器,而4d轨道参与背捐.
- 平面D(2h) 结构是由分子间相互作用引起的,这与之前的结论相矛盾.
- 在Ag(eta(2) -P(4)) ((2)(+) 中的结合与Ag(C(2)H(4)) ((2)(+) 具有惊人的相似性,涉及金属4d和5p轨道.
结论:
- 在Ag(eta(2) -P(4)) 的平面协调是由分子间力量引起的.
- 银中的金属联体结合 (I) 复合物与P4和乙烯联体具有基本相似之处.
- DFT和能量分解分析为电子结构和结合提供了关键的见解.
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