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From: | Alan Nelson |
Subject: | [Dcc-dev] bookkeeper |
Date: | Sat, 30 Sep 2006 05:05:12 +0200 |
User-agent: | Thunderbird 1.5.0.7 (Windows/20060909) |
An intramolecular hydrogen bond links the NH group to an O atom of the nearest nitro group. O hydrogen bond forms a six-membered ring. Both intra- and intermolecular hydrogen bonds are present between the hydroxyl groups, resulting in a one-dimensional hydrogen-bonding network. Cl hydrogen bonds link cations and anions to form one-dimensional ladders propagating in the a-axis direction. One m-CN DPP molecule is surrounded by six DMA molecules in the crystal structure. S hydrogen bond stabilizes the molecular structure. O hydrogen bonds into a three-dimensional network. The trimethylsilyl group is substituted in the axial position of the half-chair. N hydrogen bonds into linear chains. An intramolecular hydrogen bond links the NH group to an O atom of the nearest nitro group. There are two molecules in the asymmetric unit. O hydrogen bonding between the two independent molecules comprising the asymmetric unit involving the carbonyl O atoms; this extends to link neighboring molecules into a chain. The crystal structure is stabilized by short intermolecular Br. O hydrogen bonding between the two independent molecules comprising the asymmetric unit involving the carbonyl O atoms; this extends to link neighboring molecules into a chain. O hydrogen bonds, forming a three-dimensional hydrogen-bond network. N interactions connect these chains into a two-dimensional layer. The crystal structure is stabilized by short intermolecular Br. O hydrogen bonds link molecules into one-dimensional chains along the b-axis direction. N hydrogen bond with an O. The structure comprises two molecules in the asymmetric unit, which differ in terms of the orientation of their pendant n-propyl groups. The trimethylsilyl group is substituted in the axial position of the half-chair. O short-contact interactions. O hydrogen bonds, forming infinite chains along the c axis. O hydrogen bonds link the molecules into dimers, which may be effective in the stabilization of the crystal structure. O hydrogen bonds, forming a network. N hydrogen bonds link the molecules into centrosymmetric dimers. N hydrogen bond with an O. O intermolecular hydrogen bonds link the molecules into ribbons along the c axis. Both intra- and intermolecular hydrogen bonds are present between the hydroxyl groups, resulting in a one-dimensional hydrogen-bonding network. Cl hydrogen bonds, forming a chain along the c axis. The trimethylsilyl group is substituted in the axial position of the half-chair. O hydrogen bonds, resulting in inversion-symmetry generated dimers. |
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