Tris{2-[(3-thienyl)methylideneamino]ethyl}amine

Abstract

The title compound, C21H24N4S3, is a tripodal Schiff base that was obtained from the reaction of tris(2-aminoethyl)amine (tren) and thiophene-3-carbaldehyde. The compound forms a cavity with approximate C3 symmetry. One of the thiophene units is disordered in a 0.764 (2):0.236 (2) ratio. In the crystal, the three thiophene ligands are involved in intramolecular C—H...π interactions and the molecules are connected by C—H...N interactions, forming hydrogen-bonded chains.