Unusual NH Activation of 2-Aminopyrimidine: Supramolecular Assembly into an AgI Metal–Organic Framework

A rare example of coordination at the amino group of NH2pym (2-aminopyrimidine) relevant to NH activation is described that leads to a novel AgI–imide 3D metal–organic framework (MOF). The coordination of AgI to NH2pym produced an electron-withdrawing effect and thus increased its acidity, which facilitated the NH activation and the subsequent formation of the Ag–imide bond. A cooperative metalation/deprotonation process for the NH activation of NH2pym is suggested. Interestingly, photoluminescence of 1 is switched on at the low temperature of 77 K.