Ionothermal Synthesis of Unusual Choline‐Templated Cobalt Aluminophosphates

Into the deep: A deep-eutectic solvent based on choline chloride and one of several carboxylic acids can be used to prepare cobalt aluminophosphate analogues of zeolites. One of the new materials contains unusual ring-opened double-four-ring units, in which a cobalt atom forms a terminal CoCl bond (see picture; Co cyan, Al gray, P purple, O red, Cl green).