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Synthesis of a Sterically Encumbered Pincer Au(III)−OH Complex
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2021-09-02 , DOI: 10.1002/ejic.202100305
Silène Engbers 1 , Evgeniya A. Trifonova 1 , Kristopher M. Hess 1 , Folkert Vries 1 , Johannes E. M. N. Klein 1
Affiliation  

We report the synthesis and crystallographic characterization of a novel Au(III)−OH complex featuring a N^N^N-pincer ligand. Reactivity studies towards oxygen atom transfer (OAT), a type of reactivity previously reported for a Au(III)−OH complex, indicate that this complex provides both a sterically encumbered Au atom and a sterically poorly accessible OH group leading to no reactivity with a series of phosphines. The steric encumbrance sets this example apart from the known examples of Au(III)−OH (pincer) complexes, which commonly feature planar ligands that provide little control over steric accessibility of the Au and O atoms in these complexes. Implications for the mechanism of OAT from Au−OH complexes are briefly discussed.

中文翻译:

空间位阻钳形金 (III)-OH 配合物的合成

我们报告了一种具有 N^N^N 钳状配体的新型 Au(III)-OH 复合物的合成和晶体学表征。对氧原子转移 (OAT) 的反应性研究,先前报道的一种 Au(III)-OH 配合物的反应性,表明该配合物提供了空间阻碍的 Au 原子和空间上难以接近的 OH 基团,导致与系列膦。空间阻碍使这个例子与 Au(III)-OH(钳形)配合物的已知例子区分开来,后者通常具有平面配体,对这些配合物中的 Au 和 O 原子的空间可及性几乎没有控制。简要讨论了 Au-OH 复合物对 OAT 机制的影响。
更新日期:2021-09-15
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