One-Dimensional and Two-Dimensional Anilate-Based Magnets with Inserted Spin-Crossover Complexes

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• 作者：Alexandre Abherv茅 ; Miguel Clemente-Le贸n ; Eugenio Coronado ; Carlos J. G贸mez-Garc铆a ; Martin Verneret
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：November 17, 2014
• 年：2014
• 卷：53
• 期：22
• 页码：12014-12026
• 全文大小：674K
• ISSN：1520-510X

文摘

The syntheses, structures, and magnetic properties of a family of bimetallic anilate-based compounds with inserted spin-crossover cationic complexes are reported. The structures of 1鈥?b>4 present a two-dimensional anionic network formed by Mn(II) and Cr(III) ions linked through anilate ligands with inserted [Fe^III(sal₂-trien)]⁺ (1), [Fe^III(4-OH-sal₂-trien)]⁺ (2), [Fe^III(sal₂-epe)]⁺ (3), or [Fe^III(5-Cl-sal₂-trien)]⁺ (4) complexes. The structure of 5 is formed by anionic [Mn^IICl₂Cr^III(Cl₂An)₃]^{3鈥?/sup> chains surrounded by [FeII(tren(imid)₃)]2+, Cl鈥?/sup>, and solvent molecules. The magnetic properties indicate that 1鈥?b>4 undergo a long-range ferrimagnetic ordering at ca. 10 K. On the other hand, the inserted Fe(III) cations remain in the low-spin (in 4) or high-spin state (in 1, 2, and 3). In the case of 5, half of the inserted Fe(II) cations undergo a complete and gradual spin crossover from 280 to 90 K that coexists with a magnetic ordering below 2.5 K.}