氧化的合成和表征:晶体结构,理论分析,热化学和键解离能
Yu Heng Ma1, Xi Liu1, Yu Huan Xie1
1School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui, 239000, People's Republic of China.
Acta crystallographica. Section C, Structural chemistry
|July 30, 2025
概括
合成和表征了切莱科西布的降解产物切莱科西布过氧化物. 它的晶体结构显示出混乱,计算分析显示了低过氧化键能,表明不稳定.
科学领域:
- 制药化学 制药化学 制药化学
- 固态化学 固态化学
- 计算化学计算化学
背景情况:
- 塞莱可西布过氧化物是塞莱可西布活性药物成分 (API) 储存和销毁过程中识别的降解产物.
- 了解API降解产品的化学和物理特性对于药物的稳定性和安全性至关重要.
- 这些化合物的表征有助于预测保质期和识别潜在的杂质.
研究的目的:
- 为了合成和彻底表征塞莱科克西布过氧化物.
- 为了阐明氧化的晶体结构和分子间相互作用.
- 为了研究分子内的过氧化键的能量特性和稳定性.
主要方法:
- 使用NMR,UV,IR,MS和单晶X射线衍射 (SC-XRD) 进行合成和表征.
- 通过粉末XRD和差异扫描热度计/热重度计 (DSC/TG) 进行固态分析.
- 计算研究包括希尔什菲尔德表面分析,能量框架计算,分子静电电位面 (MEPS) 和密度函数理论 (DFT) 的键解离能 (BDE).
主要成果:
- 确定了赛莱科西布过氧化物的晶体结构,揭示了过氧化物氧原子中的分子乱.
- 分析发现了显著的O-H...N和N-H...O键,形成了一个R4^2(8) 环形图案,具有主要的O...H/O...H相互作用.
- DFT计算表明过氧化键的键解离能相对较低,这表明固有的不稳定性.
结论:
- 氧化是一种结构特征的化合物,具有固有的分子乱和特定的键模式.
- 能量分析,特别是过氧化键的低BDE,证实了该化合物的相对不稳定性.
- 这些发现提供了关于赛莱科西布的降解途径和稳定性概况的关键见解.
关键词:
在这里,我们可以使用API API API.BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE BDE希尔什菲尔德的表面表面欧洲议会的欧洲议会议员债券分离能量 债券分离能量塞莱科西布过氧化物晶体结构 晶体结构分子静电潜力是分子静电潜力.更多相关视频
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