Synthesis, characterization and catalytic studies of bimetallic heteronuclear complexes for the reduction of nitroaromatic compounds

被引：1

作者：

Adimula, Vincent O. ^{[1
,2
,3
]}

Tella, Adedibu C. ^{[1
]}

Owalude, Samson O. ^{[1
]}

Oladipo, Adetola C. ^{[4
]}

Olayemi, Victoria T. ^{[5
]}

Adeniyi, Emmanuel ^{[2
]}

Ismail, Bushra ^{[3
]}

Mumtaz, Amara ^{[3
]}

Khan, Asad M. ^{[3
]}

机构：

[1] Univ Ilorin, Dept Chem, Ilorin 240003, Nigeria

[2] Univ Ilorin, Dept Ind Chem, Ilorin, Nigeria

[3] COMSATS Univ, Dept Chem, Islamabad, Pakistan

[4] Landmark Univ, Ind Chem Programme, Dept Phys Sci, Omu Aran, Kwara State, Nigeria

[5] Kwara State Univ, Coll Pure & Appl Sci, Dept Chem, Malete, Nigeria

来源：

INORGANIC AND NANO-METAL CHEMISTRY | 2023年 / 53卷 / 05期

关键词：

Mixed-ligand; bimetallic complexes; lanthanide ion; 4-nitrophenol; METAL-ORGANIC FRAMEWORKS; COORDINATION POLYMERS; NANOPARTICLES; GRAPHENE; HYDROGENATION; ROUTE; GOLD;

D O I：

10.1080/24701556.2022.2078364

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Four mixed-ligand complexes were prepared and formulated as [Ln(H(2)OBA)(H(2)PZDC)] and [Ln(H(2)OBA)(H2PDC)] {Ln = La & Gd; H(2)OBA = 4,4-oxybisbenzoic acid; H2PDC = 2,3-pyridinedicarboxylic acid; H(2)PZDC = 2,3-pyrazinedicarboxylic acid}. The complexes were modified by a nickel/cobalt impregnation method to generate bimetallic complexes 1-8. Fourier transform infrared (FTIR) spectroscopy analysis of the bimetallic complexes indicated that the carboxylate coordinated to the lanthanide ion via the OH- group while the Ni2+ and Co2+ ions were preferentially bonded to the nitrogen donor ligand via the N- group. Complete catalytic reduction of 4-nitrophenol to 4-aminophenol by the Ni@ complexes gave a maximum reduction time of 37 minutes for complex 1 while complex 7 gave a reduction time of 21 minutes. The rate constants were observed to increase with an increase in temperature up to 50 degrees C for complexes 3, 5, and 7.

引用

页码：501 / 512

页数：12

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