Crystal structure of 7,8,15,16,17-penta-thiadi-spiro-[5.2.59.36]hepta-deca-ne

Abstract

The title compound, C₁₂H₂₀S₅, crystallizes in the monoclinic space group P2₁/c with four mol-ecules in the unit cell. In the crystal, the asymmetric unit comprises the entire mol-ecule with the three cyclic moieties arranged in a line. The mol-ecules in the unit cell pack in a parallel fashion, with their longitudinal axes arranged along a uniform direction. The packing is stabilized by the one-dimensional propagation of non-classical hydrogen-bonding contacts between the central sulfur atom of the S₃ fragment and the C-H of a cyclo-hexyl group from a glide-related mol-ecule [C⋯S = 3.787 (2) Å].

Keywords: crystal structure; lenthio­nine derivative; spiro compounds; sulfur-rich heterocycles.

Figure 1

The mol­ecular structure of 7,8,15,16,17-penta­thiadi­spiro­[5.2.5⁹.3⁶]hepta­decane. Ellipsoids are shown at the 50% level.

Figure 2

An overlay (Mercury; Macrae et al., 2006 ▸) of 7,8,15,16,17-penta­thiadi­spiro­[5.2.5⁹.3⁶]hepta­decane (yellow) and the related structure from the CSD (blue, CSD refcode: MOSYOI; Mloston et al., 2002 ▸). Only the atom labels for the title compound are shown; H atoms are omitted for clarity.

Figure 3

Crystal packing view along the a axis showing the non-classical hydrogen-bonding contacts (blue) protruding along the c-axis direction (analyzed and drawn with Mercury; Macrae et al., 2006 ▸).