双-2--,-二甲基-乙-1-氨基) 四化-酸和四化-酸)
Katelyn McGinness1, Kim Minton1, Katelyn White1
1Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, MO 63701, USA.
概括
该研究研究了基酸,揭示了在和复合体中偏爱形状的偏好. 这种形状灵活性表明了作为分子开关的潜在应用.
科学领域:
- 晶体工程和超分子化学.
- 过渡金属的协调化学.
- 有机固态化学 有机固态化学.
背景情况:
- 甲基酸的形状偏好尚未完全理解.
- 现有的结构显示了 gauche 和 anti conformations 之间的竞争.
- 作为分子开关的潜在应用需要进一步研究.
研究的目的:
- 为了探索2-chloro-N,N-dimethyl-ethan-1-aminium和3-chloro-N,N-dimethyl-propan-1-aminium电离子的构造格局. 为了探索2-chloro-N,N-dimethyl-ethan-1-aminium和3-chloro-N,N-dimethyl-propan-1-aminium电离子的构造格局.
- 为了合成和结构性地描述新型盐: (C4H11ClN) 2[CoCl4]和 (C4H11ClN) 2[ZnCl4].
- 为了研究这些离子体作为分子开关的潜力.
主要方法:
- 单晶X射线衍射用于结构特征.
- 分析晶体学数据以确定离子构成和相互作用.
- 密度函数理论 (DFT) 几何优化以研究结构稳定性.
主要成果:
- 确定了 (C4H11ClN) 2[CoCl4]和 (C4H11ClN) 2[ZnCl4]结构,显示出它们之间的密切一致.
- 无机四面体[CoCl4]2-和[ZnCl4]2-复合体由于N-H结合而呈现略微平坦的几何形状.
- 阴离子的-链在形和反形之间是无序的,形形式的占用率更高 (0.707(2) 对于酸盐).
结论:
- 阴阳体中的 gauche 构成将终端原子置于金属中心附近,而反构成则导致邻近阴阳体之间的密切接触.
- DFT计算表明,左边形状在真空中更稳定,这种偏好在均介电中减少.
- 离子体的形状灵活性,特别是在去质子化时,支持其作为分子开关的潜力.
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