Fig. 7: Crystal structures of 3D crystals encapsulating p-benzoquinone.
From: Parallel-stacked aromatic molecules in hydrogen-bonded inorganic frameworks
Crystal structures of 3D⊃p-benzoquinone (a–c), 3D⊃THF·p-benzoquinone (d, e), and 3D⊃thiophene·p-benzoquinone (f–i) determined by single-crystal X-ray diffraction. The orientation of the guest molecules in 3D⊃THF·p-benzoquinone and 3D⊃thiophene·p-benzoquinone was disordered, and a representative orientation is shown for clarity. The hydrogen atoms in the 3D crystal packing representations have been omitted for clarity. Color code: Si = red; O = blue; C = gray; H = white; S = yellow. The green and red points are the centroids of the guest molecules, and the light blue plane passes through a guest molecule. The dashed line color scheme is as follows: twist angle: green; line connecting the centroids of two guests: red; line vertically connecting a centroid to the molecular plane of another guest: blue. a, d, f 3D crystal packing; b, e, g partial space-filling views of the stacked guest molecules; c, h top view and diagonal view of the geometry of the stacked guest molecules; i 3D crystal packing of guest molecules in the crystal of 3D⊃thiophene·p-benzoquinone with 1 omitted for clarity.
