The substituent effect on the luminescent properties of a set of 4-amino-4-1,2,4-triazole: Syntheses, crystal structures and Hirshfeld analyses

Heterocycles as supramolecular handles for crystal engineering: a case study with 7-(diethylamino)coumarin derivatives

“…In light of the aforementioned considerations, the impact of incorporating a 4-amino-1,2,4-triazole ( 51 ) moiety into the 7-DAC nucleus was investigated to assess its influence on the solid-state organization. 27,31,38 The amino group (–NH 2 ) is a plausible precursor to an imine or Schiff base π-bridge for the targeted derivative (Scheme 1). The imine linkage, R–CN–R′, lacks the ability to be a classical hydrogen bond donor group.…”