在 bis ((-1,2-dithiolato) 铁复合体中的 S,S'-协调配体的氧无毒性
Kallol Ray1, Eckhard Bill, Thomas Weyhermüller
1Max-Planck-Institute for Bioinorganic Chemistry, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany.
Journal of the American Chemical Society
|April 14, 2005
概括
这项研究表明,铁复合物与二硫酸连接体并不能形成高价值铁 (IV). 相反,存在连接体的基极单离子,导致铁 (III) 复合体中的反铁磁自旋合.
科学领域:
- 无机化学 无机化学
- 协调化学 协调化学
- 频谱学是一种光谱学.
背景情况:
- 已经研究了与S,S'-协调-1,2-dithiolate连接体的铁复合体.
- 之前的研究表明,高价值铁 (IV) 物种的可获得性.
研究的目的:
- 为了阐明铁复合物的电子结构与-1,2-二甲基酸盐及其三乙烯衍生物.
- 为了澄清铁的氧化状态和这些复合体中的配体的性质.
主要方法:
- 电子吸收光谱学 电子吸收光谱学
- 红外光谱学 红外光谱学 红外光谱学
- 在X波段的电子偏磁共振 (EPR) 光谱学.
- 莫斯尔光谱法 莫斯尔光谱法
- 在X射线晶体学.
主要成果:
- 高价值铁 (IV) 在这些铁二硫酸盐复合物中是不可获得的.
- 大多数是二硫酸联体的S,S'-协调基单离子.
- 五坐标 [Fe(L) ((2) ((PMe(3)) ] 的电子结构被描述为 [Fe(III) ((L) ((L)) ((*)) ((PMe(3))) ].
- 三重基态是由铁 (III) 和基之间的分子内反铁磁自旋合引起的.
结论:
- 铁与dithiolate连接体的化学反应涉及铁 (III) 和连接体基物种,而不是铁 (IV).
- 铁中心和联结基之间的抗铁磁合决定了观察到的自旋状态.
- 结构特征证实了几个复杂的拟议的电子结构.
相关概念视频
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