Irreversible Magnetic Behaviour Caused by the Thermosalient Phenomenon in an Iron(III) Spin Crossover Complex

被引：19

作者：

Martins, Frederico F. ^{[1
,2
]}

Joseph, Abhinav ^{[1
,3
,4
]}

Diogo, Herminio P. ^{[5
]}

Minas da Piedade, Manuel E. ^{[1
,3
,4
]}

Ferreira, Liliana P. ^{[2
,6
]}

Carvalho, Maria Deus ^{[1
]}

Barroso, Sonia ^{[7
]}

Romao, Maria Joao ^{[7
]}

Calhorda, Maria Jose ^{[1
,2
]}

Martinho, Paulo N. ^{[1
,2
]}

机构：

[1] Univ Lisbon, Fac Ciencias, Ctr Quim & Bioquim, P-1749016 Lisbon, Portugal

[2] Univ Lisbon, Fac Sci, BioISI Biosyst & Integrat Sci Inst, Campo Grande C8 Bdg, P-1749016 Lisbon, Portugal

[3] Univ Lisbon, Fac Ciencias, Ctr Quim Estrutural, P-1749016 Lisbon, Portugal

[4] Univ Lisbon, Inst Super Tecn, P-1749016 Lisbon, Portugal

[5] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal

[6] Univ Coimbra, Dept Phys, P-3004516 Coimbra, Portugal

[7] Univ Nova Lisboa, REQUIMTE, UCIBIO, Fac Ciencias & Tecnol,Dept Quim, P-2829516 Caparica, Portugal

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2018年 / 25期

关键词：

Spin crossover; Thermosalient effect; Iron; Schiff base ligands; Moving crystals; Magnetic properties; CRYSTALLOGRAPHIC PHASE-TRANSITION; WIDE THERMAL HYSTERESIS; SYMMETRY-BREAKING; TEMPERATURE; CRYSTALS; COMPOUND; CHEMISTRY; ACTUATION; LIGANDS; SURFACE;

D O I：

10.1002/ejic.201800605

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：2976 / 2983

页数：8

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