N hydrogen bonds together with weak N. Both five-membered rings have envelope structures. One of the six-membered rings adopts a screw-boat conformation, one adopts an envelope conformation and the third is planar. The conformers are linked by bifurcated three-centre hydrogen bonds, forming chains running along the a axis. The conformers are linked by bifurcated three-centre hydrogen bonds, forming chains running along the a axis.
No significant hydrogen bonds are observed.
No significant hydrogen bonds are observed. The water molecules participate in extensive hydrogen bonding and link molecules into a two-dimensional network. 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. N intermolecular hydrogen bonds. O interactions are also observed. One of the six-membered rings adopts a screw-boat conformation, one adopts an envelope conformation and the third is planar.
O hydrogen bond and the ethoxycarbonyl substituent is almost coplanar with the indole ring system.
The terminal ethyl carboxylate group is coplanar with the fused ring system.
O hydrogen bonds link the molecules, forming a network, which may be effective in the stabilization of the crystal structure. O hydrogen bond involving the NH imine H atom and the phenolate O atom.
O hydrogen bonds, forming a two-dimensional network. Of the four substituents viz. N hydrogen-bonding interactions contribute to the stability of the structure.
O hydrogen bonds in addition to van der Waals interactions. Of the four substituents viz. O hydrogen bonds link adjacent molecules, forming a two-dimensional network. O hydrogen bonds link the molecules, forming a network, which may be effective in the stabilization of the crystal structure. O interactions form a hydrogen-bonded network. O hydrogen bonds are observed.
The piperidine ring has a distorted chair conformation. The sandine framework consists of two five- and three six-membered condensed rings. O hydrogen bonds that link adjacent molecules into one-dimensional extended chains.
All bond lengths and angles show normal values. The are two molecules in the asymmetric unit. O hydrogen bond involving hydroxy and imine groups. O interconnect the molecules to form a three-dimensional network. A phenylethynyl-substituted benzene ring is fused to a seven-membered ring, which binds two of the N atoms from separate rings of the glycoluril system. All atoms are located on general positions.
All atoms are located on general positions.