量化了U(V) f轨道和化物,基,氧化物,胺和胺联体之间的σ和π相互作用
Wayne W Lukens1, Norman M Edelstein, Nicola Magnani
1Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. wwlukens@lbl.gov
Journal of the American Chemical Society
|July 11, 2013
概括
一个精细的分子轨道 (MO) 模型改善了对f轨道结合在动因化和化物复合物的理解. 这种新模型准确地预测了共价性,这对于分离和磁性质的应用至关重要.
科学领域:
- 无机化学 无机化学 有机化学
- 量子化学 是一个量子化学.
- 材料科学 材料科学 材料科学
背景情况:
- 乙化物和化物复合体中的轨道结合会影响分离和磁性.
- 八面体f(1) 六合体复合体是研究f轨道键的关键模型.
- 新的配体 (基,氧化物,胺,胺) 扩大了f轨道结合研究的范围.
研究的目的:
- 为了完善分子轨道 (MO) 模型的f轨道结合.
- 为了结合对旋转轨道合和轨道角运动量的协同效应.
- 为了确定八面体f{\displaystyle f} (1) 复合体中的共价和键强度 (σ和π).
主要方法:
- 结晶场 (CF) 模型的应用,现有的 MO 模型和一个新的精细的 MO 模型.
- 对八面体f(1) 复合物的分析,具有不同的连接体.
- 确定 σ 和 π 键强度和共价性.
主要成果:
- 更精细的MO模型提供了比现有的MO模型更准确的协同价值预测.
- 对于显著的协同价值,MO模型优越;对于小的协同价值,CF模型更好.
- 新的MO模型的协同性预测与实验和理论数据保持一致.
结论:
- 轨道能量是确定f轨道键的强度和共价性的一个关键因素.
- 精细的MO模型为f轨道结合提供了更好的洞察力.
- 准确的协同性确定对于理解复杂行为至关重要.
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