Synthesis, characterization, electrochemical behavior, and catalytic activity of cobalt(II) metal complexes with pincer-type methylbenzamide derivative ligands

被引:5
作者
Keskin, Ebru [1 ]
Turunc, Ersan [1 ]
Arslan, Hakan [2 ]
机构
[1] Mersin Univ, Inst Sci, Dept Nanotechnol & Adv Mat, TR-33343 Mersin, Turkey
[2] Mersin Univ, Fac Arts & Sci, Dept Chem, TR-33343 Mersin, Turkey
关键词
Pincer complex; Catalytic activity; Aerobic oxidation; Benzamide derivatives; Electrochemical properties; SCHIFF-BASE COMPLEXES; CRYSTAL-STRUCTURES; SELECTIVE OXIDATION; NON-INNOCENT; CU-II; NI-II; CO(II); PERFORMANCE; CO; REACTIVITY;
D O I
10.1016/j.poly.2022.115846
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The pincer type new benzamide derivative ligands; N,N'-(2,2'-azenidiil-bis(2,1-phenylene))bis(2-methyl-benzamide) (H3L1), N,N'-(2,2'-azenidiil-bis(2,1-phenylene))bis(3-methylbenzamide) (H3L2), and N,N'-(2,2'-aze-nidiil-bis(2,1-phenylene))bis(4-methylbenzamide) (H3L3) were successfully synthesized from bis(2-aminophenyl) amine with addition of different substituent benzoyl chloride derivatives. Cobalt complexes of these ligands were synthesized in an inert atmosphere Glove-Box system. The synthesized compounds have been characterized by H-1 NMR, C-13 NMR, COSY, HMQC, UV-Vis, and FT-IR techniques. Crystal structure of suitable compounds was also determined by single crystal X-ray diffraction analysis. Electrochemical properties of the ligands and their cobalt complexes were investigated by cyclic voltammetry. The catalytic activities of ligands and K-2[Co(H3L1)(2)], K-2[Co(H3L2)(2)], K-2[Co(H3L3)(2)] complexes were also examined by aerobic oxidation reaction. Triphenylphosphine and diphenyl sulfide were used as substrates in these oxidation reactions. After 24 h, K-2[Co(H3L1)(2)] pincer complex showed highest catalytic activity with 81% conversion of triphenylphosphine to triphenylphosphine oxide.
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页数:11
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