Shih MH, Xu YY, Yang YS, Lin TT. Syntheses of nickel (II) complexes from novel semicarbazone ligands with chloroformylarylhydrazine, benzimidazole and salicylaldehyde moieties.
Molecules 2015;
20:5184-201. [PMID:
25803398 DOI:
10.3390/molecules20035184]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/11/2015] [Accepted: 03/13/2015] [Indexed: 11/17/2022] Open
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 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 were first treated with 2-(aminomethyl)-benzimidazole (7) to give the corresponding semicarbazides. Then, the semicarbazides 8 reacted with various substituted salicylaldehydes to afford the desired substituted-salicylaldehyde 2-aryl-4-substituted semicarbazones, which could coordinate with nickel (II) ion to give the corresponding nickel complexes.
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