Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct

Samuel A. Bryan; Richard R. Willis; Bruce A. Moyer

doi:10.1021/j100376a011

Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct

Samuel A. Bryan
, Richard R. Willis
, Bruce A. Moyer

Chemical Separations Group

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

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
Pages (from-to)	5230-5233
Number of pages	4
Journal	Journal of Physical Chemistry
Volume	94
Issue number	13
DOIs	https://doi.org/10.1021/j100376a011
State	Published - 1990

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@article{a160a9c2fa6246efbe3fda289e70b2d4,

title = "Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct",

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.",

author = "Bryan, \{Samuel A.\} and Willis, \{Richard R.\} and Moyer, \{Bruce A.\}",

year = "1990",

doi = "10.1021/j100376a011",

language = "English",

volume = "94",

pages = "5230--5233",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

number = "13",

}

Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct. / Bryan, Samuel A.; Willis, Richard R.; Moyer, Bruce A.
In: Journal of Physical Chemistry, Vol. 94, No. 13, 1990, p. 5230-5233.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct

AU - Bryan, Samuel A.

AU - Willis, Richard R.

AU - Moyer, Bruce A.

PY - 1990

Y1 - 1990

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0000300897

U2 - 10.1021/j100376a011

DO - 10.1021/j100376a011

M3 - Article

AN - SCOPUS:0000300897

SN - 0022-3654

VL - 94

SP - 5230

EP - 5233

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 13

ER -

Hydration of 18-crown-6 in carbon tetrachloride. Infrared spectral evidence for an equilibrium between monodentate and bidentate forms of bound water in the 1:1 crown-water adduct

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