2-(4-基基) 乙胺二
Allison Kester1, Taylor King1, Marcus R Bond1
1Department of Chemistry and Physics Southeast Missouri State University,Cape Girardeau MO 63701 USA.
IUCrData
|January 19, 2026
概括
一个C8H9NO2异构体的晶体结构显示出一个向外导向的乙胺基,与理论模型不同. 键形成堆,影响相关的2-乙胺化合物中的分子排列.
科学领域:
- 晶体学 晶体学是指结晶学.
- 有机化学 有机化学
- 计算化学计算化学
背景情况:
- 标题分子C8H9NO2是乙氨基 (N-(4-基) 乙胺) 的异构体.
- 了解这种异构体的结构偏好和分子间相互作用对于晶体工程和药物设计至关重要.
研究的目的:
- 为了确定C8H9NO2同位素的固态结构.
- 为了研究乙胺组相对于环的方向.
- 分析结网络,并将实验结构与理论预测进行比较.
主要方法:
- 进行了单晶X射线衍射分析,以阐明分子和晶体结构.
- 密度函数理论 (DFT) 的计算用于*真空*几何优化.
- 对相关的4-替代的2-乙胺衍生物的现有晶体结构进行了调查.
主要成果:
- 乙胺基组平面与环平面几乎垂直 (二面角为89.95°), -NH2组向外.
- 这种观察到的方向与*in vacuo* DFT优化的几何学形成鲜明对比,其中 -NH2 组是向内导向的.
- 扩展的晶体结构具有N-HO键,将分子组织成沿[100]方向的堆,并增加堆间的键.
结论:
- 与理论预测相比,固态结构表现出明显的乙胺基导向.
- 分子间的键在决定晶体包装和分子排列方面发挥着重要作用.
- 这项研究突出了在4-替代的2-乙胺衍生物中乙胺组定向的变异性,受晶体包装力的影响.
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