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Issue 3, 2020
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Synthesis, structure and catalytic activity of manganese(ii) complexes derived from bis(imidazole)methane-based ligands

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Abstract

New mononuclear manganese(II) complexes [Mn(κ2-L1)(OAc)2] ([Mn]-1), [Mn(κ2-L2)(OAc)2] ([Mn]-2) and [Mn(κ2-L3)(OAc)2] ([Mn]-3) with imidazole based ligands {4,4′-(phenylmethylene)bis(2-ethyl-5-methyl-1H-imidazole)} (L1), {(4,4′-((2-methoxy phenyl)methylene)bis(2-ethyl-5-methyl-1H-imidazole)} (L2) and {4,4′-((2-chlorophenyl) methylene)bis(2-ethyl-5-methyl-1H-imidazole)} (L3) are synthesized and fully characterized by a variety of techniques. Furthermore, the molecular structures of complexes [Mn]-1 and [Mn]-2 are established by single crystal X-ray structure analysis. The synthesized manganese(II) complexes exhibited efficient catalytic oxidative coupling of primary amines in air under solvent-free conditions to the corresponding imines in moderate to good yields.

Graphical abstract: Synthesis, structure and catalytic activity of manganese(ii) complexes derived from bis(imidazole)methane-based ligands

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Supplementary files

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Submitted
01 Oct 2019
Accepted
06 Dec 2019
First published
09 Dec 2019

Dalton Trans., 2020,49, 757-763
Article type
Paper

Synthesis, structure and catalytic activity of manganese(II) complexes derived from bis(imidazole)methane-based ligands

H. Deka, A. Kumar, S. Patra, M. K. Awasthi and S. K. Singh, Dalton Trans., 2020, 49, 757
DOI: 10.1039/C9DT03886H

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