Synthesis, characterisation and structural elucidation of novel 4-tert-butylbenzohydrazone and its Cu(II), Ni(II), Co(II) and Mn(II) complexes

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2023-09-19 DOI:10.4314/bcse.v37i6.9

Chigozie J. O. Anarado, Ebuka H. Onyilogwu, Collins U. Ibeji, Charity E. Anarado

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Abstract

ABSTRACT. 4-Tert-butylbenzohydrazone ligand was synthesised by reacting 4-tert-butylbenzohydrazide with dehydroacetic acid. Afterward, the Cu(II), Ni(II), Co(II), and Mn(II) complexes of 4-tert-butylbenzohydrazone were synthesised. All the synthesised compounds were characterised using elemental analysis, ESI-MS, IR, 1H-NMR and 13C-NMR spectroscopic methods. ESI-MS studies revealed ligand to metal stoichiometry of 1:1 for the Cu(II) complex, 2:1 for the Ni(II), Co(II), and Mn(II) complexes. IR studies showed that the ligand was coordinated to the metal ions through ONO donor atoms. The 1H NMR revealed that deprotonation did not occur in the ligand. Thus, the hydroxyl oxygen and the secondary amine nitrogen did not participate in the coordination. The proposed structures of the compounds conform with the analytical results. KEY WORDS: 4-Tert-butylbenzohydrazone, Metal complexes, Structure, Elucidation Bull. Chem. Soc. Ethiop. 2023, 37(6), 1411-1422. DOI: https://dx.doi.org/10.4314/bcse.v37i6.9

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新型4-叔丁基苯并腙及其Cu(II)、Ni(II)、Co(II)和Mn(II)配合物的合成、表征和结构解析

摘要以4-叔丁基苯并肼为原料，与脱氢乙酸反应合成了4-叔丁基苯并肼配体。随后，合成了Cu(II)、Ni(II)、Co(II)和Mn(II)配合物。采用元素分析、ESI-MS、IR、1H-NMR和13C-NMR等方法对合成的化合物进行了表征。ESI-MS研究显示，Cu(II)配合物与金属的化学计量为1:1,Ni(II)、Co(II)和Mn(II)配合物的化学计量为2:1。红外光谱研究表明，该配体通过ONO给体原子与金属离子配位。1H NMR结果表明，该配体未发生去质子化。因此，羟基氧和仲胺氮不参与配位。所提出的化合物结构与分析结果一致。关键词:4-叔丁基苯并腙;金属配合物;结构;公牛。化学。Soc。中国生物医学工程学报，2016,37(6)，1411-1422。DOI: https://dx.doi.org/10.4314/bcse.v37i6.9& x0D;

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来源期刊

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.