二维（2D）霍夫曼型配位聚合物中的滞后自旋交叉
Hysteretic Spin Crossover in Two-Dimensional (2D) Hofmann-Type Coordination Polymers.
作者信息
Liu Wei, Wang Lu, Su Yu-Jun, Chen Yan-Cong, Tucek Jiri, Zboril Radek, Ni Zhao-Ping, Tong Ming-Liang
机构信息
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, People's Republic of China.
Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Faculty of Science, Palacky University , Slechtitelu 27, 783 71 Olomouc, Czech Republic.
出版信息
Inorg Chem. 2015 Sep 8;54(17):8711-6. doi: 10.1021/acs.inorgchem.5b01341. Epub 2015 Aug 10.
Three new two-dimensional (2D) Hofmann-type coordination polymers with general formula [Fe(3-NH2py)2M(CN)4] (3-NH2py = 3-aminopyridine, M = Ni (1), Pd (2), Pt (3)) have been synthesized. Magnetic susceptibility measurements show that they exhibited cooperative spin crossover (SCO) with remarkable hysteretic behaviors. Their hysteresis widths are 25, 37, and 30 K for 1-3, respectively. The single-crystal structure of 1 suggest that the pseudo-octahedral Fe sites are equatorially bridged by M(CN)4 to form 2D grids and axially coordinated by 3-NH2py ligands. The intermolecular interactions between layers (the offset face-to-face π···π interactions, hydrogen bonds, and weak N(amino)···Ni(II) contacts) together with the covalent bonds bridged by M(CN)4 units are responsible to the significant cooperativity.
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