From a saturated C6H6 solution of racemic 4-(tetrahydro-4H-thiopyran-1-oxide-4-ylidene)-cyclohexanone oxime [1
(1-R/1-S)] the co-crystal (1)4444·C6666H6666 is crystallized. Single crystal X-ray analysis showed that (1)4444·C6666H6666
(P space group) in the solid-state consists of enantiomorphous, non-covalent polymer-like chains that contain, in an alternating fashion, the crystallographically independent enantiomers 1-R and 1-R′ or 1-S and 1-S′, respectively. Within each chain the enantiomers are linked by ‘head-to-tail’ intermolecular oxime–sulfoxide hydrogen bonding [D(2) motif]. Neighbouring chains consist of enantiomers with opposite configuration and possess opposite molecular ‘head-to-tail’ alignments. The enantiomorphous chains are interconnected by weak intermolecular C–H⋯O hydrogen bonds involving centrosymmetric C–H⋯oxime [R22(12)] and C–H⋯sulfoxide [R22(8)] motifs between the 1-R and 1-S molecules in neighbouring chains; a nearly planar two-dimensional hydrogen bonding network motif is obtained. In the crystallographic direction [1 0 0] the layers stack in such a fashion that chains occupying successive layers with an identical ‘head-to-tail’ alignment are positioned on top of each other. Concomitantly, channels with areas of ca. 25 Å2 are obtained, which are occupied by C6H6 solvent molecules. A comparison of the IR and Raman spectra of (1)4444·C6666H6666 with those obtained for native 1 that does not contain C6H6, indicates that intermolecular oxime–sulfoxide hydrogen bonding [D(2) motif] also occurs for native 1 in the solid-state.
从外消旋 4-(四氢-4H-
噻喃-1-氧化物-4-亚基)-
环己酮肟[1 (1-R/1-S)]的饱和
C6H6 溶液中结晶出共晶体 (1)4444-C6666H6666。单晶 X 射线分析表明,(1)4444-C6666H6666(P 空间群)在固态下由对映体、非共价聚合物状链组成,这些链以交替的方式分别包含晶体学上独立的对映体 1-R 和 1-R′ 或 1-S 和 1-S′。在每条链中,对映体通过分子间 "头对尾 "的
肟-亚砜氢键连接[D(2)图案]。相邻的链由构型相反的对映体组成,具有相反的分子 "头尾 "排列。对映体链之间通过微弱的分子间 C-H⋯O 氢键相互连接,相邻链中的 1-R 分子和 1-S 分子之间涉及中心对称的 C-H⋯
肟 [
R22(12)] 和 C-H⋯sulfoxide [
R22(8)] 主题;从而形成了一个近乎平面的二维氢键网络结构。在晶体学方向[1 0 0]上,各层以这样一种方式堆叠,即占据连续层的链以相同的 "头尾 "排列方式相互叠加。同时,获得了面积约为 25 Å2 的通道,这些通道被 溶剂分子占据。将 (1)4444-C6666H6666 的红外光谱和拉曼光谱与不含 的原生 1 的红外光谱和拉曼光谱进行比较,结果表明原生 1 在固态中也存在分子间的
肟-亚砜氢键[D(2) 主题]。