在分子单晶中进行的联结体交换和选择性催化化
Zheng Huang1, Peter S White, Maurice Brookhart
1Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Nature
|June 4, 2010
概括
单晶经历罕见的转变,但这项研究显示完好无损的复合体晶体交换连接体. 这使得固态中选择性催化成为可能,就像化一样.
科学领域:
- 固态化学 固态化学
- 有机金属化学 有机金属化学
- 催化剂是一种催化剂.
背景情况:
- 单晶到单晶 (SC-SC) 转换是不常见的,因为在原子重新排列后难以保持结晶性.
- 现有的SC-SC转换主要发生在多孔材料或有机晶体中的光诱导反应中.
- 在无孔分子无机或有机金属晶体中发生的SC-SC转化,涉及金属结合体变化是罕见的.
研究的目的:
- 报告一系列SC-SC转换的分子单晶的皮 (I) 复合体.
- 为了证明完整的单晶体内的中心的连接物交换反应.
- 为了揭示一个无孔分子晶体内的选择性催化.
主要方法:
- 研究了SC-SC转换,其中包括在中心交换小气态联结体 (N(2),CO,NH(3),C(2) H(4),H(2),O(2).
- 使用的针化 (I) 复杂单晶.
- 在晶体内观察到乙烯相对于烯的催化化.
主要成果:
- 实现了一系列SC-SC转换,单晶保持完整.
- 在没有先前的连接物挤出的情况下,在中心成功交换了多个小气态连接物.
- 选择性化乙烯超过乙烯 (25:1) 观察到针化单晶被二氧化碳被动化.
结论:
- 证明了SC-SC转换的可行性,其中涉及无孔分子晶体中的气态联结体交换.
- 展示了在单晶环境中发生的选择性催化.
- 在分子晶体中为固态反应和催化开辟了新的途径.
相关概念视频
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