在AIO3的非传统电子缺陷多中心键中,矿石3
Hussien H Osman1,2,3, José Luis Rodrigo-Ramón2, Shafi Ullah1
1Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain.
Chemistry of materials : a publication of the American Chemical Society
|June 16, 2025
概括
这项研究揭示了压力诱导的聚合会将酸盐 (IO3-) 聚离子转化为矿结构中的缺电子多中心键 (EDMB). 这一发现解释了主要组元素矿的特殊性质.
科学领域:
- 固态化学 固态化学
- 材料科学是一种材料科学.
- 晶体学 晶体学是指结晶学.
背景情况:
- 矿 (ABX3和BX3) 对技术应用具有特殊的性能.
- 在这些矿中B-X结合的性质仍在争论中.
- 了解粘合对于预测和利用材料特性至关重要.
研究的目的:
- 为了研究IO3-聚离子在AIO3化合物中的压力诱导聚合 (PIP).
- 为了阐明结晶结构和化学结合的结果变化.
- 探索对主要组元素矿的形成和性质的影响.
主要方法:
- 对AIO3化合物 (A = K,Rb,Cs,Tl,NH4) 的联合实验和理论研究,重点是压缩下的酸 (CsIO3).
- 分析结构对称和化学结合的变化.
- 与多中心结合的统一理论进行比较.
主要成果:
- IO3-的压力诱导聚合 (PIP) 导致具有IO5+1和IO6单位的3D结构.
- PIP诱导从非局部化的IO键向非传统的缺电子多中心键 (EDMB) 的过渡.
- 立方矿中的EDMB形成与多中心结合理论一致,挑战了以前的假设.
结论:
- PIP 是一个关键的机制,驱动由压力下的主要组元素形成立方矿.
- 非传统的EDMB可能存在于主要组元素矿中,即使在室内条件下也是如此.
- 存在EDMB可能解释了这些矿材料的非凡特性.
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