Subject: The phthalimide unit is essentially planar.

From: "Robbins Rosabella" <[email-masked]>
Date: Sun, 3 Dec 2006 21:17:31 +0200

The cation is almost planar and exists in an E configuration. The crystal structure contains sheets perpendicular to the bc plane.
One of the three fused cyclohexane rings adopts a half-chair conformation and the other two cyclohexane rings are in standard chair conformations. There is evidence of significant electron delocalization in the triazolyl system.
The morpholine unit adopts an almost ideal chair conformation.
The morpholine unit adopts an almost ideal chair conformation.
N hydrogen bonds are observed in the crystal structure. O hydrogen bonds link molecules into dimers and short Br. O intermolecular hydrogen bonds, which also determine the formation of polymeric chains along the glide direction. O hydrogen bonds stabilize the crystal packing. O contacts exist between dimers. O hydrogen bond that forms a centrosymmetric dimer.
O hydrogen bonds that link adjacent molecules into one-dimensional chains.
Intra- and intermolecular hydrogen bonding is effective in stabilizing the crystal structure. There is evidence of significant electron delocalization in the triazolyl system.
O intramolecular interactions. O interactions, leading to an infinite network. The hydroxymethylidene substituent is attached to the half-chair cyclohexane. The molecule consists of two planar fragments, viz.
The piperazine ring displays an almost-perfect chair conformation, with the tricyclic nuclei assuming a pseudo-equatorial orientation.
O intermolecular hydrogen bonds, which also determine the formation of polymeric chains along the glide direction.
The hydrogen bonds in the crystal structure seem to be too weak to generate any deformations observed in the molecule. The piperazine ring displays an almost-perfect chair conformation, with the tricyclic nuclei assuming a pseudo-equatorial orientation.
The succinate anion is located on an inversion center. O intermolecular hydrogen bonds, which also determine the formation of polymeric chains along the glide direction.
Acylhydrazines are an important  synthon used to construct hydrogen-bond networks.
The cyclohexadienone ring is planar, the cyclohexane and cyclohexene rings adopt chair and sofa conformations, respectively, while the cyclopentene ring adopts an envelope conformation. The hydrogen bonds in the crystal structure seem to be too weak to generate any deformations observed in the molecule. O hydrogen bonds link the molecules, forming infinite chains. O intramolecular interactions.
N contacts that produce molecular strands that propagate along the c axis.
The molecules are assembled into chains via hydrogen bonding. The thiophene core of the molecule adopts a planar geometry. S hydrogen bonds link the molecules into centrosymmetric dimers.