Synthesis, structure, characterization and one pot catalytic activity of half-sandwich iridium(III) complexes

被引：0

作者：

Devika, Neelakandan ^{[1
,2
]}

Ananthalakshmi, Subbiah ^{[3
]}

Raja, Nandhagopal ^{[1
,4
]}

Gupta, Gajendra ^{[1
,5
]}

Therrien, Bruno ^{[1
]}

机构：

[1] Univ Neuchatel, Inst Chem, Ave Bellevaux 51, CH-2000 Neuchatel, Switzerland

[2] Anna Univ, Univ Coll Engn, Dept Chem, BIT campus, Tiruchirappalli 620024, India

[3] Urumu Dhanalakshmi Coll, Dept Chem, Tiruchirappalli 620019, India

[4] Anna Univ, Univ Coll Engn, Dept Chem, Ariyalur 621731, India

[5] Incheon Natl Univ, Innovat Ctr Chem Engn, Dept Energy & Chem Engn, 119 Acad ro, Incheon 22012, South Korea

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2024年 / 1020卷

关键词：

Iridium complexes; Half-sandwich complexes; Catalysis; One pot amidation; Homogenous catalysis; CARBOXYLIC-ACIDS; AMIDE SYNTHESIS; RUTHENIUM(II) COMPLEXES; OXIDATIVE AMIDATION; ALDEHYDES; AMINES; ALCOHOLS; CONVERSION; LIGANDS; REARRANGEMENT;

D O I：

10.1016/j.jorganchem.2024.123331

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of stable mononuclear half-sandwich iridium(III) complexes of the general formula [(eta 5-C5Me5)Ir(L)Cl] (BPh4) has been synthesized in dry methanol using different imino pyridine ligands (L1-L6) and [(eta 5C5Me5)2Ir2(mu -Cl)2Cl2] in a 2:1 molar ratio. All complexes were fully characterized by melting point, CHN analysis, FT-IR, UV-visible, 1H NMR, 13C NMR spectroscopy and mass spectrometry. The structure of complex 3 [(eta 5C5Me5)Ir(L3)Cl](BPh4) was determined by single crystal X-ray structure analysis, showing a chelating coordination mode of the imino pyridine L3. One pot organic transformations of aldehyde to amide were carried out by complexes 1-6 in toluene at 110 degrees C in the presence of hydroxyl amine hydrochloride and sodium bicarbonate. The catalytic activity of complex 3 was found to be excellent, showing high conversion with catalytic turnover frequency up to 500.

引用

页数：9