Spectroscopic study of the interactions of alkali fluorides with D-xylose

Jose Fernández-Bertrán, Edilso Reguera, Pedro Ortiz

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Abstract

The interactions of alkali fluorides with d-xylose have been studied by X-ray diffraction (XRD), infrared spectroscopy (IR), nuclear magnetic resonance (NMR, 1 H and 13 C) and atomic absorption spectrophotometry. KF and CsF form complexes with d-xylose in a 1:1 molar ratio. These complexes can be obtained by solid state milling the reactants in an agate mortar or from methanolic solutions of the sugar and the salt. LiF and NaF do not form complex with d-xylose. IR and XRD prove the identical nature of the complexes obtained by milling and from solution. IR spectra indicate strong perturbation of the OH stretching vibrations with considerable shifts to lower frequencies, which must be caused by strong hydrogen bond formation to the fluorine anion. The perturbations of C-O bond are weak, indicating that cation binding to the oxygen atoms is not the main interaction responsible for the complex formation. 1 H NMR spectra of the d-xylose-KF complex dissolved in deuterium oxide is equal to that of pure d-xylose, indicating the destruction of the complex in solution. The complex is stable in DMSO, and 13 C spectra of the complex in DMSO-d 6 and in solid state (CPMAS) spectra are in accordance with the observed interactions in the IR spectra. As far as we know, this is the first report of a sugar-halide salt complex in which the anion instead of the cation provides the binding forces. © 2001 Elsevier Science B.V. All rights reserved.
Original languageAmerican English
Pages (from-to)2607-2615
Number of pages9
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
DOIs
StatePublished - 1 Nov 2001
Externally publishedYes

Fingerprint

xylose
Xylose
Alkalies
Fluorides
fluorides
alkalies
Infrared spectroscopy
infrared spectroscopy
Nuclear magnetic resonance
sugars
Dimethyl Sulfoxide
Sugars
nuclear magnetic resonance
interactions
Anions
Cations
Negative ions
Salts
Positive ions
Deuterium Oxide

Cite this

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title = "Spectroscopic study of the interactions of alkali fluorides with D-xylose",
abstract = "The interactions of alkali fluorides with d-xylose have been studied by X-ray diffraction (XRD), infrared spectroscopy (IR), nuclear magnetic resonance (NMR, 1 H and 13 C) and atomic absorption spectrophotometry. KF and CsF form complexes with d-xylose in a 1:1 molar ratio. These complexes can be obtained by solid state milling the reactants in an agate mortar or from methanolic solutions of the sugar and the salt. LiF and NaF do not form complex with d-xylose. IR and XRD prove the identical nature of the complexes obtained by milling and from solution. IR spectra indicate strong perturbation of the OH stretching vibrations with considerable shifts to lower frequencies, which must be caused by strong hydrogen bond formation to the fluorine anion. The perturbations of C-O bond are weak, indicating that cation binding to the oxygen atoms is not the main interaction responsible for the complex formation. 1 H NMR spectra of the d-xylose-KF complex dissolved in deuterium oxide is equal to that of pure d-xylose, indicating the destruction of the complex in solution. The complex is stable in DMSO, and 13 C spectra of the complex in DMSO-d 6 and in solid state (CPMAS) spectra are in accordance with the observed interactions in the IR spectra. As far as we know, this is the first report of a sugar-halide salt complex in which the anion instead of the cation provides the binding forces. {\circledC} 2001 Elsevier Science B.V. All rights reserved.",
author = "Jose Fern{\'a}ndez-Bertr{\'a}n and Edilso Reguera and Pedro Ortiz",
year = "2001",
month = "11",
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journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
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Spectroscopic study of the interactions of alkali fluorides with D-xylose. / Fernández-Bertrán, Jose; Reguera, Edilso; Ortiz, Pedro.

In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 01.11.2001, p. 2607-2615.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Spectroscopic study of the interactions of alkali fluorides with D-xylose

AU - Fernández-Bertrán, Jose

AU - Reguera, Edilso

AU - Ortiz, Pedro

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N2 - The interactions of alkali fluorides with d-xylose have been studied by X-ray diffraction (XRD), infrared spectroscopy (IR), nuclear magnetic resonance (NMR, 1 H and 13 C) and atomic absorption spectrophotometry. KF and CsF form complexes with d-xylose in a 1:1 molar ratio. These complexes can be obtained by solid state milling the reactants in an agate mortar or from methanolic solutions of the sugar and the salt. LiF and NaF do not form complex with d-xylose. IR and XRD prove the identical nature of the complexes obtained by milling and from solution. IR spectra indicate strong perturbation of the OH stretching vibrations with considerable shifts to lower frequencies, which must be caused by strong hydrogen bond formation to the fluorine anion. The perturbations of C-O bond are weak, indicating that cation binding to the oxygen atoms is not the main interaction responsible for the complex formation. 1 H NMR spectra of the d-xylose-KF complex dissolved in deuterium oxide is equal to that of pure d-xylose, indicating the destruction of the complex in solution. The complex is stable in DMSO, and 13 C spectra of the complex in DMSO-d 6 and in solid state (CPMAS) spectra are in accordance with the observed interactions in the IR spectra. As far as we know, this is the first report of a sugar-halide salt complex in which the anion instead of the cation provides the binding forces. © 2001 Elsevier Science B.V. All rights reserved.

AB - The interactions of alkali fluorides with d-xylose have been studied by X-ray diffraction (XRD), infrared spectroscopy (IR), nuclear magnetic resonance (NMR, 1 H and 13 C) and atomic absorption spectrophotometry. KF and CsF form complexes with d-xylose in a 1:1 molar ratio. These complexes can be obtained by solid state milling the reactants in an agate mortar or from methanolic solutions of the sugar and the salt. LiF and NaF do not form complex with d-xylose. IR and XRD prove the identical nature of the complexes obtained by milling and from solution. IR spectra indicate strong perturbation of the OH stretching vibrations with considerable shifts to lower frequencies, which must be caused by strong hydrogen bond formation to the fluorine anion. The perturbations of C-O bond are weak, indicating that cation binding to the oxygen atoms is not the main interaction responsible for the complex formation. 1 H NMR spectra of the d-xylose-KF complex dissolved in deuterium oxide is equal to that of pure d-xylose, indicating the destruction of the complex in solution. The complex is stable in DMSO, and 13 C spectra of the complex in DMSO-d 6 and in solid state (CPMAS) spectra are in accordance with the observed interactions in the IR spectra. As far as we know, this is the first report of a sugar-halide salt complex in which the anion instead of the cation provides the binding forces. © 2001 Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S1386-1425(01)00434-6

DO - 10.1016/S1386-1425(01)00434-6

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