The macrocyclic amine, 1,5,9,18,22,26-hexaaza [11.11]-p-cyclophane (1) contains two dipropylenetriamine units which make the molecule highly basic. Owing to this basicity, 1 can be highly protonated in acidic media and can form supramolecular assemblies with different anions. Two new supramolecular structures arise from self-assembly of the salt of 1 with fumaric acid and of the N-methyl derivative of 1. © 2005 Borowiak et al; licensee Beilstein-Institut.
Borowiak, T., Dutkiewicz, G., Kubicki, M., Pietraszkiewicz, M., Gil, A., & Mattes, R. (2005). Molecular recognition. 1. Crystal structures of hexaazamacrocyclic amines containing p-xylylene spacers and their adducts with acids. Beilstein Journal of Organic Chemistry, 1. https://doi.org/10.1186/1860-5397-1-16