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Step-by-Step Assembly of Metal-Organic Frameworks from Trinuclear Cu3 Clusters
Nian Zhao1, Lun Yang1, Qiyun Pan1
1Institute for Advanced Materials , Hubei Normal University , Huangshi 435002 , China.
Abstract:
Two novel metal-organic frameworks (MOFs), HBNU-1 and HBNU-2, have been synthesized successfully. We adopt a step-by-step assembly strategy, which first synthesize the Cu3 cluster Cu3(μ3-OH)(pz)3(CH3COO)2(Hpz), and then react it with H2BDC under different conditions to form final frameworks. In both MOF structures, the Cu3 clusters are maintained, although certain differences are observed. Compared with HBNU-1, the Cu3 cluster dimerizes into Cu6 cluster in HBNU-2. With this step-by-step cluster assembly strategy, MOF structure predicting becomes possible and may give some reference for MOF structure designing.
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