晶体结构,希尔什菲尔德表面分析和DFT对2-[4-(2-甲基----]-N'-[(1Z)-1-(thio-phen-2-yl) ethyl-idene]propane-hydrazide的研究
Sarayu Jayadevan1,2, K V Sujith3, A R Biju2
1Department of Chemistry, Sir Syed College, Taliparamba, Kannur, 670 142, India.
概括
这项研究表明,C19H24N2OS化合物的分子间相互作用通过N-HO键和SC相互作用形成二极体. 希尔什菲尔德分析量化了这些晶体包装力,其中主导的是HH接触.
科学领域:
- 晶体学 晶体学是指结晶学.
- 化学物理 化学物理
- 超分子化学 超分子化学
背景情况:
- 了解分子间相互作用对于预测材料性质至关重要.
- 晶体工程依赖于分子包装的详细分析.
- 标题化合物C19H24N2OS为研究非共价相互作用提供了一个有趣的案例.
研究的目的:
- 为了研究控制C19H24N2OS晶体结构的分子间相互作用.
- 量化不同相互作用对整体晶体包装的贡献.
- 通过键和其他力量来表征超分子组件的形成.
主要方法:
- 单晶X射线衍射被用来确定分子结构.
- 赫什菲尔德表面分析被用来量化分子间相互作用.
- 使用计算方法来估计相互作用能量.
主要成果:
- 分子间N-HO气键形成强大的二极体,具有显著的相互作用能量 (-70.5kJ/mol).
- 较短的SC相互作用也会导致二元体的形成,其能量为-30.6 kJ/mol.
- 希尔什菲尔德表面分析显示,HH相互作用 (67.9%) 是晶体包装中占主导地位的力量,其次是CH (13.7%),OH (7.3%) 和SH (4.3%).
结论:
- C19H24N2OS的晶体结构由强键和较弱相互作用的组合稳定.
- 希什菲尔德表面分析提供了关于不同分子间力量在晶体包装中的相对重要性的宝贵见解.
- 鉴定的相互作用和量化的能量有助于对超分子化学和晶体工程的基本理解.
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