Switching a 2D Co(II) Layer to a 3D Co7-Cluster-Based Metal-Organic Framework: Syntheses, Crystal Structures, and Magnetic Properties

被引：96
作者：
Chen, Di-Ming
Ma, Xiao-Zhou
Zhang, Xue-Jing
Xu, Na [1 ]
Cheng, Peng
机构：
[1] Nankai Univ, Dept Chem, Key Lab Adv Energy Mat Chem MOE, Tianjin 300071, Peoples R China
来源：
INORGANIC CHEMISTRY | 2015年 / 54卷 / 06期
关键词：
SINGLE-MOLECULE MAGNET; COORDINATION POLYMERS; CHAIN-MAGNET; SMM BEHAVIOR; CLUSTER; ACID; SPIN; TRANSFORMATION; MODULATION; SEPARATION;
D O I：
10.1021/acs.inorgchem.5b00074
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two 2D layered coordination networks with formulas of {[Co(TPA)Cl](H2O)(2.5)}(n) (1) and {[Co(TPA)-(mu(2)-OH)] (H2O)(2)}(n) (2) (HTPA = 4-(1,2,4-triazol-4-yl)-phenylacetic acid) were solvothermally synthesized and fully characterized. Interesting 1D Co2+-Cl or Co2+-mu(2)-OH chain structures were observed. By carefully adjusting the reaction conditions; a new 3D metal-organic framework (MOF) with a formula of {[Co-7(TPA)(6)(u(3)-OH)(4)(mu(2)-OH)(2)(H2O)(4)]-(TPA)(2)(DMF)(3)(H2O)(3)}(n) (3) was obtained. MOF 3 is built from Co-7 clusters and fully deprotonated TPA ligands, which, display a cubic pcu topology. Factors that influence the structures of the three TPA-based complexes, as well as their magnetic properties, were investigated in detail. The heptanuclear-Co(II)-cluster-based MOF 3 shows interesting Magnetization dynamics at low temperature.
引用
收藏
页码：2976 / 2982
页数：7
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