Cyano-bridged Molecular Square: [Ni(iprtacn)Fe(phen)₂(CN)₂]₂(PF₆)₄·6CH₃CN - Preparation, Structure, Magnetic Properties and Binding with DNA

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• 作者：Yong-Sheng Yang ; Wei Ren and Shi-Ping Yan
• 刊名：Zeitschrift für anorganische und allgemeine Chemie
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：643
• 期：4
• 页码：340-344
• 全文大小：636K
• ISSN：1521-3749

文摘

The cyano-bridged molecular square Ni(iprtacn)]₂[Fe(phen)₂(CN)₂]₂(PF₆)₄·6CH₃CN (1) (iprtacn = 1,4,7-triisopropyl-1,4,7-triazacyclononane, phen = 1, 10-phenanthroline) was prepared and its crystal structure, magnetic properties, and binding with DNA were characterized. The four metal ions Ni^IIFe^IINi^IIFe^II of the complex 1 are almost coplanar. Magnetic susceptibilities measured over the range of 2–300 K show weak antiferromagnetic interactions between the two nickel(II) ions; best fitting for the experimental data leads to J = –1.27 cm^–1. UV/Vis and fluorescence spectra show that the complex is able to displace DNA-bound EB and bind to DNA with strong interactions.