Magnetic Relaxation of 1D Coordination Polymers (X)2[Mn(acacen)Fe(CN)6], X = Ph4P+, Et4N+

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• 作者：Micha艂 Rams ; Eugenia V. Peresypkina ; Vladimir S. Mironov ; Wolfgang Wernsdorfer ; Kira E. Vostrikova
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：October 6, 2014
• 年：2014
• 卷：53
• 期：19
• 页码：10291-10300
• 全文大小：522K
• ISSN：1520-510X

文摘

Substitution of the organic cation X in the 1D polymer, (X)₂[Mn(acacen)Fe(CN)₆], leads to an essential change in magnetic behavior. Due to the presence of more voluminous Ph₄P⁺ cations, the polyanion has a more geometrically distorted chain skeleton and, as a consequence, enhanced single chain magnet (SCM) characteristics compared to those for Et₄N⁺. The Arrhenius relaxation energy barriers, the exchange interaction constant and the zero-field splitting anisotropy of Mn^III are determined from the analysis of magnetic measurements. The discussion is supported with ligand field calculations for [Fe(CN)₆]^{3鈥?/sup> that unveils the significant anisotropy of Fe magnetic moments.}