Hydroxyl groups

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The hydroxyl group (-OH) consists of an oxygen atom and a hydrogen atoms which share a covalent bond (bond length 0.97 angstroms)[1]. The presence of the hydroxyl group in organic compounds contributes to alcohols, phenols and carboxylic acids. Chemical activity of the hydroxyl group gives rise to other organic compounds such as esters. They can also share hydrogen bonds with other hydrogen bonding molecules, as the oxygen atom is more electronegative than the hydrogen atom.[2]  


  1. BERG. J. M et al. Biochemistry, 7th Edition, 2011, New York: W.H Freeman and Company
  2. http://en.wikipedia.org/wiki/Hydroxyl Hydroxyl (2009-2013)
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