N,N-Dimethyl-3-oxo-3-(thiophen-2-yl)propanaminium chloride

In the title molecular salt, C9H14NOS+·Cl−, the crystal packing is stabilized by weak intermolecular N—H⋯Cl, C—H⋯Cl and C—H⋯π interactions, which lead to the formation of a two-dimensional supramolecular layer which stacks along the b axis.

In the title molecular salt, C 9 H 14 NOS + ÁCl À , the crystal packing is stabilized by weak intermolecular N-HÁ Á ÁCl, C-HÁ Á ÁCl and C-HÁ Á Á interactions, which lead to the formation of a two-dimensional supramolecular layer which stacks along the b axis.
ASD thanks the University of Mysore for research facilities. JPJ acknowledges the NSF-MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: TK2775). In the molecular salt, C 9 H 14 NOS + , Cl -, one cation-anion pair makes up the asymmetric unit (Fig. 1). The crystal packing is stabilized by weak N-H···Cl, C-H···Cl and C-H..Cg π-ring intermolecular interactions (Table 1) forming a 2-D supramolecular layer which stacks along the b axis (Fig. 2).

Experimental
The title compound was obtained as a gift sample from R. L. Fine chem., Bangalore. X-ray quality crystals were obtained from slow evaporation of methanol solution (M.pt.: 451-454 K).

Refinement
The N-H atom was located from a difference Fourier map and refined with N-H = 0.87±0.02 Å, and with U iso (H) = 1.19U eq (N). All of the remaining H atoms were placed in their calculated positions and then refined using the riding model with C-H lengths of 0.95 Å (CH), 0.99 Å (CH 2 ) or 0.98 Å (CH 3 ). The isotropic displacement parameters for these atoms were set to 1.20 (CH), 1.19 (CH 2 ) or 1.49-1.51 (CH 3 ) times U eq of the parent atom.   Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating Rfactors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.