Effects of Temperature and Anion on the Copper(II) Complexes based on 2‐(Carboxyphenyl)iminodiacetic Acid and 1,10‐Phenanthroline |
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| Authors: | Jie Ma Fei‐Long Jiang Kang Zhou Lian Chen Ming‐Yan Wu Mao‐Chun Hong |
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| Institution: | 1. College of Chemistry, Chemical Engineering and MaterialsScience, Zaozhuang University, Zaozhuang, Shandong, 277160, P. R. China;2. State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China |
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| Abstract: | Using Cu(NO3)2 as metal salt, Cu3(cpida)(phen)2(H2O)5] · 3NO3 · 2H2O ( 1 ) and {Cu2(cpida)(phen)(NO3)] · 2H2O}n ( 2a ) were synthesized from an identical starting mixture with 2‐(carboxyphenyl)iminodiacetic acid (H3cpida) and 1,10‐phenanthroline (phen) at 5 °C and 25 °C, respectively. Additionally, complexes 2b – 2d , which are isostructural to 2a , were obtained using Cu(ClO4)2, Cu(BF4)2, and Cu(CF3SO3)2 instead of Cu(NO3)2 in the temperature range 0–65 °C. 1 is characterized by a V‐shaped trinuclear CuII monomer, whereas 2a – 2d features a one‐dimensional (1D) Δ CuII chain. Abundant hydrogen bonds constructed by the nitrate anion are observed in 1 . A structural transformation study was undertaken and revealed that 1 could completely transform into 2a from the reaction solution at 25 °C and the temperature plays a crucial role in the process. Magnetic measurements revealed that 1 exhibits dominant antiferromagnetic behavior, whereas 2a presents dominant ferromagnetic behavior. |
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| Keywords: | 2‐(Carboxyphenyl)iminodiacetic acid &&num 916 CuII chain Temperature Hydrogen bonds Anions |
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