Polyoxometalate Anion-Induced On–Off Spin-Crossover Property in Two Isomeric Cobalt(II) Complexes with Proton Conductivity
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)<sub>2</sub>]<sup>2+</sup>. Intriguingly, a locked high-spin (HS) state and a spin-crossover (SCO) behavior of the 3<i>d</i><sup>7</sup>-Co<sup>II</sup> ion in the identical cation [Co(pyterpy)<sub>2</sub>]<sup>2+</sup> were governed by α-type and β-type [Mo<sub>8</sub>O<sub>26</sub>]<sup>4-</sup> 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.
Authors
- Xiaopeng Sun (ORCID: https://orcid.org/0000-0002-9903-6120)
- Jingyang Niu (ORCID: https://orcid.org/0000-0001-6526-7767)
- Jiajia Li (ORCID: https://orcid.org/0009-0007-4657-5036)
- Zheng Tang (ORCID: https://orcid.org/0000-0002-8604-5386)
- Pengtao Ma (ORCID: https://orcid.org/0000-0002-0587-8635)
- Zhiqiang Gao (ORCID: https://orcid.org/0000-0002-6160-1147)
- Yuxia Li (ORCID: https://orcid.org/0000-0003-1916-2707)
- Yun Li (ORCID: https://orcid.org/0009-0002-5707-5647)
- Jingping Wang
Institutions
- Henan University (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-04-18
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c00639
- Citations
- 2
- Primary Topic
- Polyoxometalates: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Henan Province