Abstract
The interaction of water with 18-crown-6 (18C6) in carbon tetrachloride has been investigated by FTIR techniques. As shown by least-squares analysis, the functional dependence of the absorbance of OH stretching bands (3800-3200-cm-1 region) on the H2O and 18C6 concentrations indicates the formation of 1:1 18C6-H2O adducts, giving the value 15.6 ± 1.2 M-1 for the molar equilibrium constant at 25.0°C. The number, positions, and widths of the OH stretching bands of the 1:1 18C6-H2O adduct indicate the presence of two forms of bound water, one in which the H2O molecule dangles from an ether oxygen atom by a single hydrogen bond and one in which H2O bridges two ether oxygen atoms.
Original language | English |
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Pages (from-to) | 5230-5233 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry |
Volume | 94 |
Issue number | 13 |
DOIs | |
State | Published - 1990 |