Crystal and molecular structures of two salts based on polyamine deribatives

Abstract

The crystal structures of salts (I) and (II), (C18H22N3)(NO3) and (C8H24N4)[ZnCl4]Cl2, based on protonated polyamines (diethylenetriamine and N,N′-bis(2-aminoethyl)piperazine) are studied by single-crystal X-ray diffraction. Salt (I) exhibits a wave-like 1D chain formed by N—H···O hydrogen bonds from mono-protonated (C18H22N3)+ cations and NO3− anions. In salt (II), multi-protonated N,N′-bis(2-aminoethyl)piperazinium ions are connected into two types of infinite subloop chains through N—H···Cl and C—H···Cl halogen-bonding contacts from (C8H24N4)4+ cations, and [ZnCl4]2− and Cl− anions. Analysis of the Hirshfeld surfaces show the intermolecular interactions involved within the crystal structures. Corresponding quantitative information are presented by fingerprint plots.