Design and Synthesis of Stable Cobalt-Based Weak Ferromagnetic Framework with Large Spin Canting Angle

作者：Liu, Ting; Gao, Su-Mei; Xu, Long-Yang; Zhao, Jiong-Peng^*; Liu, Fu-Chen; Hu, Hai-Liang; Kang, Zhen-Hui

来源：Inorganic Chemistry, 2014, 53(24): 13042-13048.

DOI：10.1021/ic502177k

• DYNAMIC MAGNETIC-BEHAVIOR
• COORDINATION POLYMERS
• AZIDO COMPLEX
• CANTED ANTIFERROMAGNETISM
• CRYSTAL-STRUCTURE
• ORBITAL LIQUID
• CO-II
• CHAIN
• LIGAND
• SQUARE

It still remains a great challenge to design and construct framework-structured weak ferromagnets with large canting angle which is an effective approach for high performance magnets. According to the strategy of antisymmetric interaction causing spin canting, we report the design of four cobalt compounds, which were tested by X-ray single crystal diffraction, TGA, PXRD, and magnetic measurement. Single-crystal structure analysis reveals that compound 1 has a 2D structure, complex 2 has a 3,4-connected 3D framework, and complex 3 exhibits a 3D net structure with rare 3,5-connected 2-nodal beta-SnF2 topology and the solvent MeOH trapped in the 3D channels as guests. The magnetic property of 3 is spin canting just as designed, with TN about 4.0 K and large canting angle of 14.8 degrees. Highly stable compound 3 sustains its framework in air for more than 12 months, in which the guest MeOH molecules can be replaced by water to form complex 4.

• 出版日期2014-12-15
• 单位苏州大学; 天津市职业大学; 天津理工大学