化学
负热膨胀
钴
磁性
热膨胀
单晶
氢
结晶学
放松(心理学)
凝聚态物理
无机化学
材料科学
复合材料
有机化学
心理学
社会心理学
物理
作者
Xu‐Jie Xiong,Yang-Lu Zhang,Xing‐Cai Huang,Genyan Liu,Dong Shao
出处
期刊:Polyhedron
[Elsevier]
日期:2023-10-01
卷期号:243: 116567-116567
被引量:2
标识
DOI:10.1016/j.poly.2023.116567
摘要
The magnetic and thermal expansion properties of a cobalt(II) hydrogen-bonded organic framework (CoHOF), [Co(H2O)6](NPS)2 (1, HNPS = naphthalene-2-sulphonic acid), constructed by hexaaquacobalt(II) and organsulfonate were reported. Single-crystal X-ray diffraction reveals a porous 2D hydrogen-bonded framework of 1 sustained by multiple and charge-assisted intermolecular hydrogen bonding interactions. Variable-temperature single-crystal combined with powder X-ray diffraction and thermal gravimetric analyses confirms the high thermal stability of the CoHOF. The dynamic changes of the crystal lattice indicate uniaxial negative thermal expansion (NTE) behavior along the c-axis direction through a possible slippage motion. Magnetic measurements indicate the Co2+ ions show uniaxial magnetic anisotropy with D = −92.5 cm−1. A.C. susceptibility measurements reveal field-driven slow magnetic relaxation of 1. These results provide a rare cobalt(II) hydrogen-bonded organic framework showing single-ion magnetism and negative thermal expansion properties.
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