Investigating the Crystal Engineering of the Pillared Paddlewheel Metal-Organic Framework Zn2(NH2BDC)2DABCO

McGrath, Devon T. and Downing, Victoria and Katz, Michael J. (2018) Investigating the Crystal Engineering of the Pillared Paddlewheel Metal-Organic Framework Zn2(NH2BDC)2DABCO. CrystEngComm, 20 (39). pp. 6082-6087. ISSN 1466-8033

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Abstract

The synthesis of Zn2(NH2BDC)2DABCO was investigated with the hopes of producing a material with a high surface area. Despite considerable efforts to get reproducible results, replacing BDC with NH2BDC was not trivial; the gas adsorption isotherms were inconsistent, resulting in different gas uptakes and large variation in hysteresis loops. Given this, we examined the gas adsorption isotherms (BET surface area and pore size distributions), the solution-phase NMR, and the powder X-ray diffractograms of our materials in order to puzzle out the underlying chemistry. From this data, we illustrate how 1D chains of Zn(H2O)2(NH2BDC) are converted to partially pillared Zn2(NH2BDC)2DABCO which is either amorphous or crystalline based on the NH2BDC : DABCO ratio.

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