4-(3-Ammonio-prop-yl)morpholin-4-ium tetra-chloridozincate(II).

In the title compound, (C(7)H(18)N(2)O)[ZnCl(4)], the Zn(II) ion is coordinated by four Cl atoms in a close to tetra-hedral geometry. The crystal packing exhibits C-H⋯Cl, N-H⋯Cl and N-H⋯O hydrogen bonds.

In the title compound, (C 7 H 18 N 2 O) [ZnCl 4 ], the Zn II ion is coordinated by four Cl atoms in a close to tetrahedral geometry. The crystal packing exhibits C-HÁ Á ÁCl, N-HÁ Á ÁCl and N-HÁ Á ÁO hydrogen bonds.

Structure Reports Online
As shown in Fig. 1, to ensure charge balance, the organic species is double protonated at N1 and N2 nitrogen atoms. The structure consists essentially of an 4-(3-ammoniopropyl)morpholin-4-ium and [ZnCl 4 ] 2anion which are held together by N-H···Cl and C-H···Cl hydrogen bonds so as to build layers developing parallel to (a, c) planes (Fig. 2). These layers, situated at y = 1 / 4 and y = 3 / 4 , are themselves interconnected by a set of N2-H···Cl hydrogen bonds (Table 1), alternating with layers, to form a three dimensional infinite network (Fig. 3). The Zn (II) ion is in tetrahedral coordination environment composed of four chloride ions. Each ZnCl4 2anion is connected to its neighbors organic cations, which are associated via N-H···O hydrogen bonds, by N-H···Cl and C-H···Cl interactions involving four chlorine atoms (Table 1) However, it is worth noticing that the Zn-Cl bond lengths and Cl-Zn-Cl bond angles in the [ZnCl 4 ] 2anion are not equal to one another but vary with the environment around the Cl atoms (Valkonen et al., 2006). In the title compound, the Zn-Cl bond lengths vary between 2.2486 (4) and 2.2950 (4) Å. The Cl-Zn-Cl bond angles range from 104.32 (1) to 114.43 (2) °. These values indicate that the anionic [ZnCl 4 ] 2tetrahedron is slightly distorted (Guo et al., 2007).

Experimental
ZnCl 2 , aqueous 1M HCl solution and 3-Morpholinopropylamine in a 1:2:1 molar ratio were mixed and dissolved in sufficient ethanol. Single crystals suitable for X-ray diffraction were prepared by evaporation of a solution of the title compound in ethanol at room temperature after a few days.

Refinement
The H atoms were all located in a difference map, but those attached to carbon atoms were repositioned geometrically. The

Special details
Refinement. Data with I<3σ(I) were excluded from the refinement.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å 2 )
x y z U iso */U eq