2-[Bis(2-aminoethyl)amino]ethanaminium chloride dichloromethane solvate

In the title compound, C6H19N4 +·Cl−·CH2Cl2, the non-H atoms of the ammonium ion show non-crystallographic C 3 symmetry. The chloride ion is embedded in a framework of seven crystallographically independent hydrogen bonds (five N—H⋯Cl and two C—H⋯Cl), which form layers parallel to the (100) plane. Two N---H...N bonds also occur.

In the title compound, C 6 H 19 N 4 + ÁCl À ÁCH 2 Cl 2 , the non-H atoms of the ammonium ion show non-crystallographic C 3 symmetry. The chloride ion is embedded in a framework of seven crystallographically independent hydrogen bonds (five N-HÁ Á ÁCl and two C-HÁ Á ÁCl), which form layers parallel to the (100) plane. Two N-H...N bonds also occur.

S1. Comment
The title compounds molecular structure is shown in Fig. 1. The ammonium ion does not exhibit any crystallographic symmetry but, excluding the hydrogen atoms, it shows non-crystallographic C 3 symmetry.
It has to be assumed that the chloride ion is formed by a nucleophilic substitution reaction between a part of the tris(2aminoethyl)amine and the solvent dichloromethane.
In the crystal structure, hydrogen bonds between the ammonium and chloride ions and the solvate molecule form twodimensional networks parallel to the (100) plane (see Fig. 2). The chloride ion is embedded in a framework of seven crystallographically independent hydrogen bonds (see Fig. 3).

S2. Experimental
Crystals of the title compound were obtained from a solution of tris(2-aminoethyl)amine (0.15 g, 5.0 mmol) and trimethylborate (0.52 g, 5.0 mmol) in dichloromethane (10 ml) upon slow evaporation of the solvent at room temperature.

S3. Refinement
All H atoms were found in difference maps. C-bonded H atoms were positioned geometrically (C-H = 0.99 Å) and treated as riding on their parent atoms [U iso (H) = 1.2U eq (C)]. N-bonded H atoms were assigned from difference maps and treated as riding on their parent atoms [U iso (H) = 1.2U eq (N)].