Metal organic frameworks (MOFs) as solid catalysts or catalyst supports for a variety of organic transformations are attributed to their inherent porosity and high surface areas originated through crystalline periodic 3-D structure.1 Methods to rationally design MOFs for targeted catalytic application are still rare due to poor understanding of the relationship between the structure and their catalytic properties.2 The present study is an attempt to understand the fundamental relationship between the structure and the catalytic activity of MOF. Two new bimetallic, tetragonal (MST-1) and hexagonal (MST-2), Co/Zn MOFs with SBUs containing M3O (M = metal) cluster have been synthesized from the same constituents using BTC3- as organic linker that form decorated 3, 6 and 3, 5 connected networks, respectively. These MOFs have channels along c-axis and catalyze chemo-selective addition of amines to epoxide giving exclusively β-hydroxyamine under heterogeneous condition. The hexagonal phase diastero-selectively adds amines to symmetrical cyclohexene oxide to give trans-alcohol showing an exquisite model for structure dependent catalytic activity in MOFs. References: [1] (a) Liu, J.; Chen, L.; Cui, H.; Zhang, J.; Zhang, L.; Su, C. –Y. Chem Soc. Rev. 2014, 43, 6011-6061. (b) Silva, P.; Vilela, S. M. F.; Tome, J. P. C.; Paz, F. A. A.; Chem. Soc. Rev. 2015, 44, 6774-6803. (c) Yoon, M.; Srirambalaji, R.; Kim, K. Chem. Rev. 2012, 112, 1196-1231. [2] Corma, A.; Garcia, H.; Xamena, F. X. L. i. Chem. Rev. 2010, 110, 4606-4655.

Structure dependent catalytic activity of bimetallic metal organic framework

251st National Meeting (2016)

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