The effects of metals and ligands on the oxidation of n-octane using iridium and rhodium "PNP" aminodiphosphine complexes

被引：2
作者：
Naicker, Dunesha [1 ]
Alapour, Saba [1 ]
Friedrich, Holger B. [1 ]
机构：
[1] Univ KwaZulu Natal, Sch Chem & Phys, Catalysis Res Grp, Westville Campus, ZA-4000 Durban, South Africa
来源：
JOURNAL OF CHEMICAL RESEARCH | 2021年 / 45卷 / 3-4期
基金：
新加坡国家研究基金会;
关键词：
Aminodiphosphine; iridium; n-octane; oxidation; rhodium; TRIPODAL 4N LIGANDS; HYDROGEN-PEROXIDE; ALKANE-HYDROXYLATION; PINCER COMPLEXES; CATALYTIC-OXIDATION; STRUCTURAL-CHARACTERIZATION; ETHYLENE TETRAMERIZATION; NICKEL(II) COMPLEXES; TRIMERIZATION; EPOXIDATION;
D O I：
10.1177/1747519820967245
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ir and Rh "PNP" complexes with different ligands are utilized for the oxidation of n-octane. Based on the obtained conversion, selectivity, and the characterized recovered catalysts, it is found that the combination of Ir and the studied ligands does not promote the redox mechanism that is known to result in selective formation of oxo and peroxo compounds [desired species for C(1) activation]. Instead, they support a deeper oxidation mechanism, and thus higher selectivity for ketones and acids is obtained. In contrast, these ligands seem to tune the electron density around the Rh (in the Rh-PNP complexes), and thus result in a higher n-octane conversion and improved selectivity for the C(1) activated products, with minimized deeper oxidation, in comparison to Ir-PNP catalysts.
引用
收藏
页码：282 / 289
页数：8
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