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- Title
Synthesis, crystal structure, and magnetic properties of a new one-dimensional chain antiferromagnet Co(ox)(bib)·H<sub>2</sub>O (ox = oxalate; bib = 1,4-bis(imidazole-1-yl)benzene).
- Authors
She, Yan; Wang, Yanhong; Li, Shuang; Wang, Tao; Lu, Hongcheng
- Abstract
A new one-dimensional (1D) chain antiferromagnet Co(ox)(bib)·H2O 1 (ox = oxalate; bib = 1,4-bis(imidazole-1-yl)benzene) has been successfully synthesized under hydrothermal condition and characterized by single crystal X-ray crystallography, powder X-ray diffraction, thermogravimetric analysis, Fourier transform infrared (FTIR) spectroscopy, magnetic susceptibility, and heat capacity measurements. The CoII ion is connected by oxalate ions in trans-configuration to form 1D CoII-ox-CoII spin chains, which are further separated by the long organic molecule bib. The magnetic susceptibility curve shows that 1 exhibits a feature of broad maximum around 29 K, indicating strong antiferromagnetic interactions with short spin-spin correlations along the spin chains. However, no long-range order is observed due to the negligible interchain interactions through bib ligand and weak hydrogen bonds, which is further confirmed by the heat capacity data. The intrachain interaction J of −8.4 K is estimated. Both magnetic susceptibility and heat capacity results indicate that 1 exhibits a good 1D magnetism.
- Subjects
ANTIFERROMAGNETIC materials; MAGNETIC properties; COBALT compounds; OXALATES; X-ray crystallography
- Publication
Nano Research, 2023, Vol 16, Issue 2, p3552
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-022-5206-5