在5组氧化 (MOX3) 的复合物中,西格玛孔支持的相互作用,对其扩展固体的洞察力
Donovan Hoilette1, Gabriel F Stewart1, Kelling J Donald1
1Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia 23173, USA. kdonald@richmond.edu.
这项研究以计算方式研究5组MOX3氧化物中sigma-hole相互作用. 证据表明,这些相互作用通过M-O和M-X结合稳定了扩展的固体,澄清了晶体结构.
科学领域:
- 无机化学 无机化学
- 固态化学 固态化学
- 计算化学计算化学
背景情况:
- 在有机化合物中,西格玛洞相互作用是众所周知的,但在无机延伸固体中却没有得到充分的研究.
- 5组MOX3氧化物具有极化金属中心,这使得它们成为西格玛孔相互作用的有趣候选者.
- 这些化合物的现有晶体结构数据为计算研究提供了基础.
研究的目的:
- 以计算方式检查5组MOX3分子,集群和扩展固体中的西格玛孔类型相互作用.
- 提供关于西格玛孔支结合在稳定无机延伸固体中的作用的证据.
- 为了澄清这些氧化系统中的结合模式和能量.
主要方法:
- 在孤立的MOX3分子中结合的计算检查 (M = V, Nb, Ta; X = H, F, Cl, Br, I).
- 在最小集群 (MOX3) 中分析结合和能量.n.
- 识别支持西格玛孔的MO和MX结合相互作用.
主要成果:
- 有实质证据表明,西格玛孔支持的MO和MX结合稳定了扩展的固体.
- 一维的二次元单元堆被证明可以传播西格玛孔结合相互作用.
- 在西格玛洞绑定中发现的弱收费转移贡献.
结论:
- 西格玛孔相互作用在稳定5组MOX3扩展固体方面发挥着重要作用.
- 计算结果支持最近的结晶结构建议,而不是旧的建议,例如,对于NbOCl3.
- 该研究阐明了无机材料中西格玛洞相互作用的性质和重要性.
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