Nonclassical oxygen atom transfer reactions of an eight-coordinate dioxomolybdenum(vi) complex

被引：2
|
作者：
Ranis, Leila G. [1 ]
Gianino, Jacqueline [1 ]
Hoffman, Justin M. [1 ]
Brown, Seth N. [1 ]
机构：
[1] Univ Notre Dame, Dept Chem & Biochem, 251 Nieuwland Sci Hall, Notre Dame, IN 46556 USA
来源：
INORGANIC CHEMISTRY FRONTIERS | 2021年 / 8卷 / 11期
基金：
美国国家科学基金会;
关键词：
TRANSITION-METAL-COMPLEXES; ELECTRONIC-STRUCTURES; CRYSTAL-STRUCTURE; LIGAND; OXIDATION; REACTIVITY; MECHANISM; DIOXYGEN; CATECHOL; ALKYL;
D O I：
10.1039/d1qi00308a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The dioxomolybdenum(vi) complex MoO2Cl2(dmf)(2) reacts with Pb(DOPOQ)(2) (DOPO = 2,4,6,8-tetra-tert-butyl-1,9-dioxophenoxazinate) to give MoO2(DOPOQ)(2), which has an eight-coordinate structure with normal molybdenum-oxo bond distances and angles but elongated distances to the dioxophenoxazine ligand. The dioxo complex is deoxygenated by phosphines to produce octahedral Mo(DOPOCat)(2), in which reduction has taken place at the ancillary ligands. This compound in turn reacts with trimethylamine-N-oxide to regenerate MoO2(DOPOQ)(2), allowing a catalytic cycle for phosphine oxidation. This represents an example of four-electron nonclassical oxygen atom transfer in which both the oxidized and reduced forms of the metal complexes can be observed.
引用
收藏
页码：2865 / 2870
页数：6
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