Supramolecular interactions in H-X salts of some polyamines

摘要

The X-ray crystal structures of a range of protonated or quaternary amines show a variety of supramolecular interactions,predominantly hydrogen bonding,but in structures where there is no classical H-donor atoms,C-H-I interactions dominate the solid-state structure.The X-ray crystal structures of [TETA(H~+)4][tos]4·4 H2O (1),[TETA(H~+)_2][NO3]_2 (2) (TETA=triethyl-enetetramine),[Apip(H~+)2][NO3]2 (3),[Apip(H~+)4][Cl]4 (4) (Apip=N,N'-bis(2-aminoethyl)piperazine),[dbm][I] (5A),and [dbm][I](C7H8) (5B) (dbm=N,N-dibenzylmorpholinium) are presented.