协调不和氧化复合物:结构,物理化学性质和对二氧化的反应性
Kiyoshi Fujisawa1, Taisei Kataoka1, Kohei Terashima1
1Department of Chemistry, Ibaraki University, Mito 310-8512, Ibaraki, Japan.
Molecules (Basel, Switzerland)
|September 9, 2023
概括
这项研究研究了一种新的-基复合物与二氧化碳的反应. 与先前研究的阻碍复合物不同,这种阻碍较小的复合物经历了酸和酸连接体的氧化.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 生物有机化学 生物有机化学
背景情况:
- 一氧化 (NO) 是一种在生物系统和协调化学中至关重要的氧化还原活性联体.
- 金属-NO复合体表现出复杂的电子结构,需要详细的光谱和理论分析.
- 立体阻碍联体可以稳定金属-NO复合物,防止氧化.
研究的目的:
- 为了研究一种新的,阻碍性较小的-酸盐复合物的二氧化物反应性,[Ni(NO) ((I) ((L1′′) ].
- 为了比较它的反应性与以前报告的性保护的-尼托复合物.
- 阐明新综合体的电子结构和反应产物.
主要方法:
- 合成和特征的[Ni(NO) ((I) ((L1′′) ]复合体.
- 用于结构确定的X射线晶体学.
- 红外 (IR) 和UV-Vis光谱用于电子和振动分析.
- 理论计算以了解电子结构.
- 与二氧化物 (O2) 的反应研究.
主要成果:
- 新的复合体具有一个高旋转 (II) 中心,与一个 (NO-) 连接物协调,类似于受阻模拟物.
- 与稳定的阻碍复合物不同,[Ni(NO) ((I) ((L1′′) ]与O2反应.
- 反应产生氧化产物,包括化物 (NO2-) 和化物 (I3-),表明NO-和化物连接体的氧化.
结论:
- 在[Ni(NO) ((I) ((L1′′) ]中受阻较小的配体所造成的协调不和环境促进了二氧化物反应.
- 复合物在暴露于O2时经历氧化降解,从而形成亚酸盐和三酸.
- 体阻碍对-基复合物的稳定性和对二氧化物的反应性起着至关重要的作用.
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