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Irreversible Magnetic Behaviour Caused by the Thermosalient Phenomenon in an Iron(III) Spin Crossover Complex
European Journal of Inorganic Chemistry ( IF 2.3 ) Pub Date : 2018-06-22 , DOI: 10.1002/ejic.201800605
Frederico F. Martins 1, 2 , Abhinav Joseph 1, 3 , Hermínio P. Diogo 4 , Manuel E. Minas da Piedade 1, 3 , Liliana P. Ferreira 2, 5 , Maria Deus Carvalho 1 , Sónia Barroso 6 , Maria João Romão 6 , Maria José Calhorda 1, 2 , Paulo N. Martinho 1, 2
Affiliation  

The new iron(III) complex [Fe(5‐I‐salEen)2]ClO4 exhibits both spin crossover, with hysteresis, between 304 K and 320 K (16 K hysteresis loop), and thermosalient phenomena. After a symmetry‐breaking phase transition between 120 and 130 K, confirmed by single‐crystal X‐ray diffraction, and the fragmentation of the crystals around 312 K, confirmed by differential scanning calorimetry and hot stage microscopy, the hysteresis loop disappears. This is the first example where the explicitly reported thermosalient effect modifies the magnetic properties of a given spin crossover crystal.

中文翻译:

铁(III)自旋交联复合物中的热敏现象引起的不可逆磁行为

新的铁(III)络合物[Fe(5-I-salEen)2 ] ClO 4既表现出自旋交变,又具有304 K至320 K(16 K磁滞回线)之间的磁滞现象,以及热盐现象。通过单晶X射线衍射确认在120至130 K之间发生对称性破坏的相变,并通过差示扫描量热法和热台显微镜确认,在312 K附近发生晶体碎裂,磁滞回线消失了。这是第一个示例,其中明确报告的热盐效应会改变给定自旋交叉晶体的磁性能。
更新日期:2018-06-22
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