描述NiN2S2复合物的固体和电子特性,作为S-捐赠体金属二甲基酸盐连接体
Marilyn V Rampersad1, Stephen P Jeffery, Melissa L Golden
1Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA.
Journal of the American Chemical Society
|December 8, 2005
概括
这项研究描述了二甲基酸盐连接体在碳复合体中的特征,揭示了它们的电子和硬质性质. 离子Ni(ema)(2)(-) 配体显示了增强的电子捐赠,影响了复杂的反应性和结构.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 方形平面NiN2S2复合体在协调化学中充当多功能联结体.
- 碳酸添加物对于研究联体电子和固体效应非常有价值.
研究的目的:
- 为NiN2S2复合体作为S-捐赠体的S2S2复合体建立电子和固体参数.
- 研究NiN2S2连接体对W(CO) 4复合物的特性的影响.
- 为了将结构特征与电化学和光谱数据相关联.
主要方法:
- 六个 (NiN2S2) W(CO) 4复合物的合成和表征.
- 分析了nu(CO) 拉伸频率和Cotton-Kraihanzel力常数.
- 使用循环电压测量的电化学研究.
- 进行X射线衍射分析以确定结构参数.
- 可变温度的13C核磁共振光谱学.
主要成果:
- 在5个中性NiN2S2配体中,观察到捐赠者能力的差异很小.
- 双离子Ni{ema) 2{-) 干体向W{CO) 4部分表现出优异的电子捐赠.
- 电化学数据表明,复合体的减少潜力发生了显著的积极转变.
- 发现了Ni ((II/I) 氧化还原潜力与NiN2S2连接体的链角度之间的相关性.
- X射线衍射揭示了从107到136度的链角度,与其他连接体相比,这是一个独特的特征.
结论:
- NiN2S2连接体的电子和固态特性可以根据它们的电荷和结构特征来调整.
- (CO) 4部分作为电子受体,影响NiN2S2配体的氧化还原行为.
- NiN2S2连接体的链角度是一个关键的结构参数,影响其与金属中心的电子通信.
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