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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 45,
  • Issue 9,
  • pp. 1497-1500
  • (1991)

Infrared Study of Tetraalkylurea in Carbon Tetrachloride and/or Hexane and in Chloroform and/or Hexane 1% Solutions

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Abstract

This study indicates that intermolecular complexes exist between tetraal-kylurea and carbon tetrachloride and between tetraalkylurea and chloroform. The type of complex or complexes formed is dependent upon the mole % CCl<sub>4</sub>/C<sub>6</sub>H<sub>14</sub> or mole % CHCl<sub>3</sub>/C<sub>6</sub>H<sub>14</sub>. Intermolecular hydrogen-bonded complexes between tetraalkylurea and chloroform (such as I; I and II; II and III; and III) are formed as the mole % CHCl<sub>3</sub>/C<sub>6</sub>H<sub>14</sub> increases. The steady decrease in the <i>v</i>C=O frequency is attributed in part to the bulk dielectric effects of the solvent system.

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