Hydrogen-hond network

Chino K, Ashiura M. Thermoreversihle cross-linking ruhher using supramolecular hydrogen-honding networks. Macromolecules 2001 34 9201-9204. 

Crystal solvates exhibit a wide range of behaviour depending on the interaction between the solvent and the crystal stmcture. With some solvates the solvent plays a key role in holding the crystal together for example, it may he part of a hydrogen-honded network within the crystal stmcture. These solvates are very stable and are difficult to desolvate. When these crystals lose their solvent they collapse and recrystallise in a new crystal form. We can think of these as polymorphic solvates. In other solvates, the solvent is not part of the crystal bonding and merely occupies... 

Figure 2 Concanavalin A binding site showing metal chelation and hydrogen hond networks.

Only small variations were observed among all dienes, though a relationship could be established between the activation entropy of the reaction in water and the sensitivity of the reaction to the solvent change in a few cases, notably, for the a-o-galacto 26 and the p-o-galacto 27 dienes residues. The variations were hypothetically discussed by considering how the carbohydrate moiety fits into the three-dimensional hydrogen-hond network of water, so to say to the hydration pattern of the dienes. ... 

LADDER POLYMER. An ordered molecular network of double-stranded chains connected by hydrogen or chemical honds located at regular inicrvals along the chains. Many complex proteins, including DNA. arc of this nature. 

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