作为多氧化的稳定剂的分子内反应无价相互作用 (VII)
Mikhail A Volkov1, Anton P Novikov1, Nataliya E Borisova2
1Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, 31 Bldg 4, Leninsky Prosp., Moscow 119071, Russian Federation.
Inorganic chemistry
|August 21, 2023
概括
这项研究介绍了第一个聚焦酸 ((VII) 化合物,详细介绍了其新型结构和分子内相互作用. 合成了和技术化合物,揭示了对聚氧甲酸盐形成和寡合化模式的新见解.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
背景情况:
- 聚氧甲酸盐是一种多样化的金属-氧基聚类类别,在催化和医学中具有应用.
- 了解聚氧甲酸盐的结构图案和粘合,对于设计新材料至关重要.
- 和技术属于子组,具有独特的协调化学反应.
研究的目的:
- 合成和表征第一个多氧化 ((VII) 化合物,pyrazolium polyoxorhenate.
- 研究 (VII) 和技术 (VII) 聚氧离子的结构特征和结合.
- 探索这些金属-氧团的形成机制和寡合化模式.
主要方法:
- 单晶X射线衍射用于结构性确定pyrazolium polyoxorhenate.
- 密度函数理论 (DFT) 计算来分析几何和电子结构.
- 质谱技术 (MALDI,LI-MS,ESI-MS) 用于研究溶液和固态中的寡合化和物种化.
主要成果:
- 合成了新的[Re4O15]2-多氧,其特征是通过分子内Re-O相互作用稳定了cis-conformation.
- 希尔什菲尔德表面分析显示了主要的分子间相互作用,包括O-H/H-O,H-H和O-O接触.
- 质谱测量证实了[Tc20O68]4-的形成,并证明了能够形成超出[Re4O15]2-. . .的更重的多氧离子.
结论:
- 皮拉聚焦酸盐的发现扩大了已知的聚焦甲酸盐家族,具有独特的结构特征.
- 内部分子非价值相互作用在稳定新型聚氧离子结构方面发挥着重要作用.
- 对比质谱学研究提供了对和多氧化的寡合化趋势的见解.
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