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[Javaweb-submit] cycle contravene


From: Ernest Bridges
Subject: [Javaweb-submit] cycle contravene
Date: Thu, 5 Oct 2006 06:23:15 -0700
User-agent: Thunderbird 1.5.0.7 (Windows/20060909)


The bond lengths are normal.
The deviation from a planar arrangement can be attributed to non-classical hydrogen bonds and steric factors. O hydrogen bond is favoured by the syn conformation of both carboxyl groups.
O hydrogen bonds, which link the molecules into a chain parallel to the b axis. O hydrogen bonds into a one-dimensional helical structure.
The crystal structure is stabilized by hydrogen bonds and weak van der Waals interactions.
Both sdz ligands are N-coordinated via an N atom of the sulfonamide group.
There are two molecules in the asymmetric unit which differ in conformation. O hydrogen-bonding interactions between water molecules, carboxyl hydroxy groups and carboxylate groups. The hydroxy, amino and carbonyl groups are all involved in hydrogen bonding. In the crystal structure, two of the molecules form a hydrogen-bonded dimer, while the third forms a centrosymmetric hydrogen-bonded dimer with its symmetry-equivalent molecule. The transition metal cation is six-coordinated by three ethylenediamine molecules in an octahedral geometry. O hydrogen bonding involving the water molecules located on a twofold axis links the complex molecules into a three-dimensional network.
O hydrogen bonds, which link the molecules into a chain parallel to the b axis.
The molecule is approximately planar for all non-H atoms.
The cation and all atoms of the anion lie on a mirror plane.
An intramolecular hydrogen bond occurs between the oxazole and hydroxy groups.
O hydrogen-bonding interactions between water molecules, carboxyl hydroxy groups and carboxylate groups. The complete molecule is located on a crystallographic mirror plane.
The hydroxy, amino and carbonyl groups are all involved in hydrogen bonding. O contacts in the structure.
This leads to the formation of alternate hydrophilic and hydrophobic layers.
The crystal structure is stabilized by hydrogen bonds and weak van der Waals interactions.
O hydrogen bonds, forming centrosymmetric dimers. O hydrogen bonding involving the water molecules located on a twofold axis links the complex molecules into a three-dimensional network. The two dimethylglyoximate ligands are involved in intramolecular hydrogen bonds. This is the first crystal structure of a metal complex of sulfamerazine.
The complete molecule is located on a crystallographic mirror plane.
This is the first crystal structure of a metal complex of sulfamerazine. In the crystal structure, two of the molecules form a hydrogen-bonded dimer, while the third forms a centrosymmetric hydrogen-bonded dimer with its symmetry-equivalent molecule. An intramolecular hydrogen bond occurs between the oxazole and hydroxy groups. Disordered C atoms in the ring bearing the carbonyl group of the matrinium cation cause the ring to appear in half-chair and half-boat conformations. The geometry of the complex is comparable to that in a previously reported nitrate salt.


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