2,3-(3,6,9-Trioxaundecane-1,11-diyldisulfanyl)-1,4,5,8-tetrathiafulvalene-6,7-dicarbonitrile

In the title compound, C16H16N2O3S6, the two five-membered rings form a dihedral angle of 7.86 (9)°. Weak C—H⋯N hydrogen bonds link the molecules to form a chain along c; the chains are further connected by weak C—H⋯O hydrogen bonds to form a three-dimensional supramolecular network.

In the title compound, C 16 H 16 N 2 O 3 S 6 , the two five-membered rings form a dihedral angle of 7.86 (9) . Weak C-HÁ Á ÁN hydrogen bonds link the molecules to form a chain along c; the chains are further connected by weak C-HÁ Á ÁO hydrogen bonds to form a three-dimensional supramolecular network.
The title compound, (I), as shown in Fig. 1, all bond lengths and angles are normal and comparable with those reported for the related structure (Hou et al., 2009). In the crystal, weak C-H···O hydrogen bonds (table 1) link the molecules into two-dimensional network in ac plane. The crystal structure is further stablized by weak C-H···N hydrogen bonds along c dirction.

Experimental
The title compound, (I), was prepared according to literature (Yin et al., 2006) and single crystals suitable for X-ray diffraction were prepared by slow evaporation a mixture of dichloromethane and petroleum (60-90 °C) at room temperature.

Refinement
Carbon-bound H-atoms were placed in calculated positions with C-H = 0.97 A and were included in the refinement in the riding model with U iso (H) = 1.2 U eq (C). Fig. 1. The asymmetric unit of the title compound, with the atom numbering. Displacement ellipsoids of non-H atoms are drawn at the 30% probalility level.

Special details
Experimental. (See detailed section in the paper) Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.