基于桥连聚氰根金属配合物的铁(II)自旋交叉材料的临界温度调谐：五氰亚硝酰铁(II)和六氰合铂(IV)。

Tuning of the critical temperature in iron(II) spin-crossover materials based on bridging polycyanidometallates: pentacyanidonitrosylferrate(II) and hexacyanidoplatinate(IV).

机构信息

Department of Inorganic Chemistry, Faculty of Science, Palacký University in Olomouc, 17 listopadu 12, CZ 771 46 Olomouc, Czech Republic.

出版信息

Inorg Chem. 2011 Dec 19;50(24):12390-2. doi: 10.1021/ic201702j. Epub 2011 Nov 18.

DOI:10.1021/ic201702j

PMID:22098426

Abstract

The reactions of iron(II) sulfate, 4-amino-3,5-di-2-pyridyl-4H-1,2,4-triazole (abpt), and pentacyanidonitrosylferrate(II) or hexacyanidoplatinate(IV) resulted in the formation of one-dimensional iron(II) spin-crossover compounds Fe(abpt)(2)(μ-Fe(CN)(5)(NO)) (1) and Fe(abpt)(2)(μ-Pt(CN)(6)) (2) with the spin-transition critical temperature near or above room temperature accompanied by thermochromism. Furthermore, it has been proven that the critical temperature T(c) is influenced by the type of dianionic polycyanidometallate within the series of discussed systems, and it changes in the sequence of Fe(CN)(5)(NO) < Pt(CN)(6)) < Ni(CN)(4)) ≈ Pd(CN)(4)) ≈ Pt(CN)(4)).

摘要

硫酸亚铁(II)、4-氨基-3,5-二-2-吡啶基-4H-1,2,4-三唑（abpt）和五氰亚硝酰基铁(II)或六氰合铂(IV)的反应导致一维铁(II)自旋交叉化合物Fe(abpt)(2)(μ-Fe(CN)(5)(NO))（1）和Fe(abpt)(2)(μ-Pt(CN)(6))（2）的形成，其自旋转变临界温度接近或高于室温，并伴有热致变色。此外，已经证明临界温度 T(c)受到所讨论体系中阴离子多氰化物金属配合物类型的影响，并且在Fe(CN)(5)(NO)<Pt(CN)(6))<Ni(CN)(4))≈Pd(CN)(4))≈Pt(CN)(4))的序列中发生变化。