Acetylene storage performance of [Ni(4,4'-bipyridine) 2 (NCS) 2 ] n , a switching square lattice coordination network.

We report that the previously reported square lattice coordination network [Ni(4,4'-bipyridine) 2 (NCS) 2 ] n , sql-1-Ni-NCS, undergoes acetylene induced switching between closed (nonporous) and open (porous) phases. The resulting stepped sorption isotherms exhibit temperature controlled steps, consistent high uptake and benchmark working capacity (185 cm -3 g -1 or 189 cm -3 , 1-3.2 bar, 288 K) for acetylene storage.