Tris(1H-benzimidazol-2-ylmethyl)amine-solvent adducts

Abstract

The tris(1H-benzimidazol-2-ylmethyl)amine (ntb) molecule crystallizes in different solvent systems, resulting in two kinds of adduct, namely the monohydrate, C24H21N7.H2O or ntb.H2O, (I), and the acetonitrile-methanol-water (1/0.5/1.5) solvate, C24H21N7.C2H3N.0.5CH4O.1.5H2O or ntb.1.5H2O.0.5MeOH.MeCN, (II). In both cases, ntb adopts a tripodal mode to form hydrogen bonds with a solvent water molecule via two N-H...O and one O-H...N hydrogen bond. In (I), the ntb.H2O adduct is further assembled into a two-dimensional network by N-H...N and O-H...N hydrogen bonds, while in (II), a double-stranded one-dimensional chain structure is assembled via N-H...O and O-H...O hydrogen bonds, with the acetonitrile molecules located inside the cavities of the chain structure.