Metal(IV) Complexes [M(L
<sub>N,O,S</sub>
)
<sub>2</sub>
]
<sup>
<i>n</i>
</sup>
(M = Ru, Os) of a Redox‐Active
<i>o</i>
‐Amidophenolate Ligand (L
<sub>N,O,S</sub>
)
<sup>2–</sup>
with Coordinating Thioether Appendix
作者:Ralph Hübner、Biprajit Sarkar、Jan Fiedler、Stanislav Záliš、Wolfgang Kaim
DOI:10.1002/ejic.201200225
日期:2012.8
Complexes [M(LN,O,S)2] [M = Ru, Os; (LN,O,S)2– = 4,6-di-tert-butyl(2-methylthiophenylamido)-o-phenolate] were obtained and structurally characterized as metal(IV) complexes with mer-configured tridentate ligands. Two reversible oxidations and one (Os) or two (Ru) reversible reductions were investigated by EPR and UV/Vis/NIR spectroelectrochemistry. The first reduction leads to EPR-silent MIII species
配合物 [M(LN,O,S)2] [M = Ru, Os; (LN,O,S)2– = 4,6-二叔丁基(2-甲基硫代苯基酰胺基)-邻苯酚酯] 被获得并在结构上表征为金属(IV)配合物与mer配置的三齿配体。通过 EPR 和 UV/Vis/NIR 光谱电化学研究了两种可逆氧化和一种 (Os) 或两种 (Ru) 可逆还原。第一次还原导致 EPR 沉默的 MIII 物种,而氧化产生亚氨基半醌配合物,在单占 MO 处具有以配体为中心的自旋和小金属参与。在时间相关 (TD)-DFT 计算的帮助下分配可见光和近红外区域的吸收。