The structural parameter of spin states of <i>C</i> <sub>1</sub> -symmetric four-coordinate cobalt complexes: <i>D</i> <sub>4</sub>
Herein, we reveal the correlation between structure and spin-states for <i>C</i> <sub>1</sub>-symmetric four-coordinate cobalt complexes. A series of <i>C</i> <sub>1</sub>-symmetric four-coordinate cobalt complexes with various steric, electronic, anions and chelation modes were synthesized and characterized. X-ray diffraction studies revealed a structural distortion from square-planar to distorted tetrahedral pyramidal geometry. Combining paramagnetic nuclear magnetic resonance (pNMR), magnetic measurement (SQUID), X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT), the electronic structure with a cobalt(ii) (<i>S</i> <sub>Co</sub> = 1/2 to 3/2) ion antiferromagnetically coupled to a radical anion ligand (<i>S</i> <sub>Ligand</sub> = 1/2) was established. A new structural parameter, <i>D</i> <sub>4</sub>, was introduced as an improved parameter for quantitatively assessing the spin state in four-coordinate complexes.
Authors
- Jiyong Liu (ORCID: https://orcid.org/0000-0002-1193-9019)
- Zhan Lu (ORCID: https://orcid.org/0000-0002-3069-079X)
- Chenggong Zheng (ORCID: https://orcid.org/0009-0007-7074-4290)
- Haoran Li (ORCID: https://orcid.org/0000-0002-1877-9599)
- Yuwen Wang (ORCID: https://orcid.org/0009-0004-9150-0322)
- Yongtao Wang (ORCID: https://orcid.org/0000-0001-9153-8890)
Institutions
- Zhejiang Lab (CN)
- Zhejiang University (CN)
Publication Details
- Journal
- Chemical Science
- Published
- 2025-11-03
- DOI
- https://doi.org/10.1039/d5sc06683b
- Citations
- 1
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- University of Chinese Academy of Sciences
- Dalian Institute of Chemical Physics
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Zhejiang Province