O interactions are observed.
Intramolecular hydrogen bonding is observed between the carbonyl group and the hydroxy group. O hydrogen bonds link the molecules into two-dimensional layers.
The molecule occupies a special position on a twofold axis and the saturated ring has a half-chair conformation. The O atom of one solvent water molecule also lies on a twofold axis.
O hydrogen bond helps to establish the molecular conformation.
O hydrogen bonds link the molecules into chains running along the a axis. There are two molecules in the asymmetric unit. The molecule occupies a special position on a twofold axis and the saturated ring has a half-chair conformation.
O hydrogen bonds link the molecules into two-dimensional crimped layers parallel to the bc plane.
The phillyrin molecules have almost identical geometry; each of them contains two benzene rings, two fused tetrahydrofuran rings and a d-glucose fragment. In the molecule, two thiazoline rings are located on one side of the central benzene plane, while the third thiazoline ring is located on the other side of the central benzene plane.
O interactions, forming zigzag chains along the c axis.
The molecule contains a centre of inversion at the mid-point of the central double bond and the thiazine rings have an envelope conformation.
The two imino groups are hydrogen bonded with the dimethyl sulfoxide solvent molecule.
The molecule occupies a special position on a twofold axis and the saturated ring has a half-chair conformation.
O interactions and Br. The six-membered rings have chair conformations, while the conformation of the five-membered ring is an envelope. In the molecule, two thiazoline rings are located on one side of the central benzene plane, while the third thiazoline ring is located on the other side of the central benzene plane. The conformations of these non-planar molecules are similar.
O interactions are observed.
The six-membered rings have chair conformations, while the conformation of the five-membered ring is an envelope. The six-membered rings have chair conformations, while the conformation of the five-membered ring is an envelope.
O hydrogen bond helps to establish the molecular conformation.
O hydrogen bonds that link molecules into one-dimensional extended chains.
O hydrogen-bonding interactions.
O hydrogen bond helps to establish the molecular conformation. O hydrogen bond helps to establish the molecular conformation. O hydrogen bonds to give a three-dimensional molecular network.
S intermolecular hydrogen bonds, forming a two-dimensional network. O hydrogen bonds complete a two-dimensional hydrogen-bond network. The water molecule lies on a twofold axis.
O hydrogen bonds that link molecules into extended one-dimensional chains.
The heteroatom ring of the quinoxalinone system shows a half-chair conformation, slightly distorted towards a sofa. The nitro group is almost coplanar with the benzene ring to which it is attached.
S intermolecular hydrogen bonds, forming a two-dimensional network. S intermolecular interactions.
O hydrogen bonds, leading to zigzag chains along the b axis.
O hydrogen bond helps to establish the molecular conformation. The two imino groups are hydrogen bonded with the dimethyl sulfoxide solvent molecule.