Hydrogen bond properties

The effect of amino, hydroxy or mercapto substituents is to increase hydrogen bonding properties. However, if stable hydrogen bonds are found in the crystal, then this can decrease... 

Elving, Rosenthal, Hayes and Martin 41> studied the electrochemical reduction of bromofumaric acid(27) and bromomaleic acid(28)in aqueous solution over a wide pH range. It was claimed that reduction of 27 proceeds stereo-specifically to fumaric acid, and that reduction of 28 affords mixtures of maleic and fumaric acids. Because of the polar and hydrogen-bonding properties of the carboxyl groups in 27 and 28, the relation of these results to those of Fry and Mitnick l6) is unclear. 

Etter MC, Urbanczyk-Lipkowska Z, Baer S et al (1986) The crystal structures and hydrogen-bond properties of three 3-hydroxyflavone derivatives. J Mol Struct 144 155-167... 

V) are more biologically relevant because of the solvent and associated hydrogen-bonding properties. However, specific interactions from the protein cannot be fully reproduced. Indeed, the redox potential of [Fe(SCH2CH20H)4] f in water is close to the lower limit of FeS4 sites in rubredoxin proteins (—0.1 to +0.1 V versus standard hydrogen electrode (SHE)). 

Steiner, Th. (1997). Unrolling the hydrogen bond properties of C H...O interactions. Chem. Comm. 727-34. 

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