稳定(VI) 甲基和乙化物复合物,以及对反向转介影响联结体序列的阐明
Andrew J Lewis1, Patrick J Carroll, Eric J Schelter
1P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States.
Journal of the American Chemical Society
|August 9, 2013
概括
新的复合物与甲基和乙化物联体具有显著的热稳定性,这是由于反向的变态影响. 这种稳定效应比相关的化物复合物更大,经过实验和计算得到证实.
科学领域:
- 有机金属化学 有机金属化学
- 化学 的化学
- 协调化学 协调化学
背景情况:
- 复合物在各种化学应用中至关重要.
- 了解控制-碳键稳定性的因素对于开发新的催化和合成方法至关重要.
- 逆转变影响 (ITI) 是一种已知的现象,影响协调复合体中的连接体稳定性.
研究的目的:
- 合成和表征新型热稳定的(VI) -甲基和-乙化物复合物.
- 为了研究反转变的影响在稳定-碳键中的作用.
- 根据实验和计算数据建立一系列的反转影响联体.
主要方法:
- (VI) -甲基和-乙化物复合物的合成,其公式为U (VI) OR[N (SiMe3) 2]3,其中R=-CH3,-CCPh.
- 合成复合物的实验性表征.
- 计算研究来分析结合和稳定性.
- 电化学还原研究以评估复杂的稳定性.
- 对cis-破坏稳定性,电化学稳定性,UO键形成和抗键相互作用的相关性分析.
主要成果:
- 成功制备了热稳定的(VI) -甲基和-乙化物复合物.
- 观察到基基组的协调转向-氧多重键.
- 与相关的 (VI) - 化物复合物相比,碳化合物复合物表现出更大的ITI稳定性.
- 建立了一个全面的反向转变影响带系列,整合了理论和实验发现.
结论:
- 逆转变的影响在这些复合体中稳定-碳键方面发挥着重要作用.
- 与化物联体相比,碳酸联体提供了增强的稳定性.
- 开发的配体系列为控制复合体稳定性的电子和固态因素提供了宝贵的见解.
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