Polyoxometalate Anion-Induced On–Off Spin-Crossover Property in Two Isomeric Cobalt(II) Complexes with Proton Conductivity

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-04-18 DOI:10.1021/acs.inorgchem.5c00639

Xiao-Peng Sun, Jiajia Li, Yun Li, Yuxia Li, Zhongtian Gao, Zheng Tang, Pengtao Ma, Jingping Wang, Jingyang Niu

引用次数: 0

Abstract

The integration of polyoxometalate (POM) anions with functionalized cations within a single molecule remains a challenging task, even though POMs have garnered significant interest over an extended period. Here, we constructed two cobalt(II) complexes by incorporating isomeric POM anions with [Co(pyterpy)₂]²⁺. Intriguingly, a locked high-spin (HS) state and a spin-crossover (SCO) behavior of the 3d⁷-Co^II ion in the identical cation [Co(pyterpy)₂]²⁺ were governed by α-type and β-type [Mo₈O₂₆]^4– anions, and the HS-Co(II) ion showed field-induced slow magnetic relaxation. Furthermore, both complexes exhibited potential as solid-state proton conductors. This study revealed that POM anions possessed the dual capability of modulating magnetism and synthesizing multifunctional molecular materials.

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两种具有质子导电性的同分异构体钴（II）配合物阴离子诱导的开关自旋交叉性质

多金属氧酸盐（POM）阴离子与功能化阳离子在单个分子中的整合仍然是一项具有挑战性的任务，尽管POM在很长一段时间内获得了很大的兴趣。在这里，我们通过将异构体POM阴离子与[Co(pyterpy)2]2+结合构建了两个钴（II）配合物。有趣的是，37 - coii离子在相同阳离子[Co(pyterpy)2]2+中的锁定高自旋（HS）态和自旋交叉（SCO）行为受α型和β型[Mo8O26]4 -阴离子控制，HS-Co（II）离子表现出场致慢磁弛豫。此外，这两种配合物都表现出作为固态质子导体的潜力。研究表明，聚甲醛阴离子具有调制磁性和合成多功能分子材料的双重能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.