Preparation of a Mg 2+ -containing MOF through ion exchange and its high ionic conductivity.

We report, for the first time, the preparation and ionic conductivity of a Mg 2+ -containing metal-organic framework (MOF) having type A features, i.e. , an anionic framework containing Mg 2+ as the counter cation. We prepared Mg 3 [(MnMo 6 O 18 ) 2 L] (L 12- = C{C 6 H 4 CHNC(CH 2 O) 3 } 4 12- ) (MOF-688-Mg) through a simple ion exchange reaction, and it showed high ionic conductivity above 10 -5 S cm -1 at 25 °C under MeCN vapor.