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Combined NMR and UV/Vis Spectroscopy in the Solution State: Study of the Geometries of Strong OHO Hydrogen Bonds of Phenols with Carboxylic Acids
Author(s) -
Tolstoy Peter M.,
Koeppe Benjamin,
Denisov Gleb S.,
Limbach HansHeinrich
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200806181
Subject(s) - hydrogen bond , proton nmr , chemistry , intermolecular force , spectroscopy , spectral line , nuclear magnetic resonance spectroscopy , phenols , ultraviolet visible spectroscopy , phenol , nmr spectra database , proton , photochemistry , analytical chemistry (journal) , organic chemistry , molecule , physics , quantum mechanics , astronomy
A head of the game : A new probe head for simultaneous NMR and UV/Vis spectroscopic measurements is designed. 1 H NMR and UV/Vis spectra of an intermolecular hydrogen‐bonded complex (see scheme) are measured simultaneously in CD 2 Cl 2 at 175 K. Aided by the 1 H NMR spectra, the sample concentration can be adjusted so that the desired complex is the exclusive form of the phenol present. The UV/Vis spectra allow the approximate position of the bridging proton to be found.