The crystal packing is stabilized by van der Waals forces. Ni contacts are observed between anions and cations in the crystal structure. The asymmetric unit contains two molecules. S interactions promote two-dimensional packing parallel to the ac plane, and form a three-dimensional network. O hydrogen bonds to form centrosymmetric hydrogen-bonded dimers.
O intramolecular hydrogen bonds lead to the formation of a sequence of five-, six- and five-membered rings, respectively, which are edge-fused. S interactions promote two-dimensional packing parallel to the ac plane, and form a three-dimensional network. O hydrogen bonds, forming a supramolecular assembly.
O hydrogen bonds to create centrosymmetric dimers.
The asymmetric unit contains two molecules. The molecule contains five six-membered rings, two five-membered rings and a three-membered ring.
One of the six-membered rings adopts a screw-boat conformation, one adopts an envelope conformation and the third is planar.
O hydrogen bonds, forming a supramolecular assembly. S interactions promote two-dimensional packing parallel to the ac plane, and form a three-dimensional network.
It is a glycoluril derivative with five fused rings.
N hydrogen bonds together with weak N. The terminal ethyl carboxylate group is coplanar with the fused ring system. O hydrogen bonds are observed.
O hydrogen bonds, linking the molecules into chains. O interactions help to form chains of molecules in the crystal structure.
N hydrogen-bonding interactions contribute to the stability of the structure.
O hydrogen bonds that link adjacent molecules into one-dimensional extended chains. O hydrogen bonds, linking the independent molecules into dimers, may be effective in the stabilization of the crystal structure. The piperidine ring has a distorted chair conformation.
, tert-butyl, aryl, bromo and methoxy groups, the former two occupy equatorial positions and the latter two are placed axially on the cyclohexanone ring.