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Molecules 2015, 20(3), 5184-5201; doi:10.3390/molecules20035184

Syntheses of Nickel (II) Complexes from Novel Semicarbazone Ligands with Chloroformylarylhydrazine, Benzimidazole and Salicylaldehyde Moieties

Department of Chemical and Materials Engineering, Southern Taiwan University of Science and Technology, Tainan City 71005, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 30 January 2015 / Revised: 11 March 2015 / Accepted: 13 March 2015 / Published: 20 March 2015
(This article belongs to the Section Organic Synthesis)
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Abstract

This study addressed the design and syntheses of diverse ligands, which were then successfully treated with Ni (II) ion to afford a series of nickel complexes. α-Chloroformylarylhydrazine hydrochlorides 6 contain two different functional groups. One is a strong nucleophile, and the other is a good electrophile. Therefore, it can be designed to react with several reagents to obtain diverse derivatives which can be used as ligands for metal complexes. Furthermore, benzimidazole and salicylaldehyde can provide electron donor sites, N and O electron donors, separately. Hence, the starting materials α-chloroformylarylhydrazine hydrochlorides 6 were first treated with 2-(aminomethyl)-benzimidazole (7) to give the corresponding semicarbazides 8. Then, the semicarbazides 8 reacted with various substituted salicylaldehydes 911 to afford the desired substituted-salicylaldehyde 2-aryl-4-substituted semicarbazones 1214, which could coordinate with nickel (II) ion to give the corresponding nickel complexes 1517. View Full-Text
Keywords: α-chloroformylarylhydrazine; benzimidazole; salicylaldehyde; semicarbazides; semicarbazones; nickel complexes α-chloroformylarylhydrazine; benzimidazole; salicylaldehyde; semicarbazides; semicarbazones; nickel complexes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Shih, M.-H.; Xu, Y.-Y.; Yang, Y.-S.; Lin, T.-T. Syntheses of Nickel (II) Complexes from Novel Semicarbazone Ligands with Chloroformylarylhydrazine, Benzimidazole and Salicylaldehyde Moieties. Molecules 2015, 20, 5184-5201.

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