Hydrogen bonding water

Solubility in Water Alkyl halides and alcohols differ markedly from one another m their solubility m water All alkyl halides are insoluble m water but low molecular weight alcohols (methyl ethyl n propyl and isopropyl) are soluble m water m all pro portions Their ability to participate m mtermolecular hydrogen bonding not only affects the boiling points of alcohols but also enhances their water solubility Hydrogen bonded networks of the type shown m Figure 4 5m which alcohol and water molecules asso ciate with one another replace the alcohol-alcohol and water-water hydrogen bonded networks present m the pure substances... 

The principal effect of beating is a physical one that causes breakage of some intrafiber hydrogen bonds and their replacement of fiber by water hydrogen bonds [36]. 

The high basicities of the smaller rings may be explained by intramolecular hydrogen bonds which stabilize the protonation pyridinium forms (see Scheme 5). In X-ray analyses obtained for crystals grown from water, hydrogen bonds between the pyridinium ion, water molecule(s) and ether... 

University of Minnesota-Morris. Water Hydrogen Bonding. Available online. URL http //chemed.chem.purdue.edu/ genchem/topicreview/bp/ch22/activate.html. 

Most drug-like molecules dissolved in water form hydrogen bonds with the solvent. When such a molecule transfers from water into a phospholipid bilayer, the solute-water hydrogen bonds are broken (desolvation), as new solute-lipid H bonds form in the lipid phase. The free-energy difference between the two states of solvation has direct impact on the ability of the molecules to cross biological barriers. 

Fig. 8. Stereoscopic illustration of the inclusion compound of host 5 (folded conformation) with acetic acid and 2 mol of water. Host-host and host-water hydrogen bonding interactions stabilize the structure. The solvation layers consist of cyclic carboxy dimers of acetic acid surrounded by water species (crystal data a = 7.857, b = 11.379,c = 13.831 A,a = 92.50,/i = 101.21, y = 101.12°, space group Pi taken from Ref. 351)...

T. Suzuki, The hydration of glucose The local configurations in sugar water hydrogen bonds. 

The complex [Sr(H20)8] [(CH3CN)(CTV)]4(H20)4[Co(C2B9H11)2]2 38 has a more complicated 3D hydrogen bonded network [85]. As before, the hydrogen bonding interactions that make up the network are between CTV and water, however in this instance, the water hydrogen bond donors are both uncomplexed water and aquo... 

These results reflect the point made earlier that the structure of water is determined by the competition between the water-metal and water-water interactions. When the former are weak with no underlying lattice structure, the water structure near the metal is similar to the bulk structure. When the water-metal interactions are stronger, the water is much more structured. This was clearly demonstrated by Lee et who observed much more pronounced density oscillations when the water hydrogen-bonding interactions were turned off. 

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