Trimethyl isocyanurate and triethyl isocyanurate

Abstract

The crystal structures of trimethyl isocyanurate, C6H9N3O3, (1) and triethyl isocyanurate, C9H15N3O3, (2) contain topologically similar C-H …O hydrogen-bonded networks. In (1), there are two symmetry-independent molecules and each forms its own layer structure. In (2), two of the ethyl groups point one way with respect to the heterocyclic ring while the third points in the opposite direction