cm303624p_si_004.cif (21.9 kB)

Postsynthetic Exchanges of the Pillaring Ligand in Three-Dimensional Metal–Organic Frameworks

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posted on 19.02.2016, 12:34 by Seok Jeong, Dongwook Kim, Xiaokai Song, Min Choi, Noejung Park, Myoung Soo Lah
Metal–organic frameworks, [Ni­(HBTC)­(dabco)] (2) and [Ni2(HBTC)2(bipy)0.6(dabco)1.4] (3) (where H3BTC is 1,3,5-benzenetricarboxylic acid, dabco is 1,4-diazabicyclo[2.2.2]­octane, and bipy is 4,4′-bipyridine), were prepared via postsynthetic ligand exchanges of [Ni­(HBTC)­(bipy)] (1). By controlling the concentration of dabco, we could obtain not only entropically favorable 2 with completely exchanged dabco but also enthalpically favorable 3 with selectively exchanged bipy/dabco in the alternating layers.