Hydrogen-Bond Symmetry in Difluoromaleate Monoanion

…, P Karri, C Moore, AL Rheingold

Index: Perrin, Charles L.; Karri, Phaneendrasai; Moore, Curtis; Rheingold, Arnold L. Journal of the American Chemical Society, 2012 , vol. 134, # 18 p. 7766 - 7772

Full Text: HTML

Citation Number: 12

Abstract

The symmetry of the hydrogen bond in hydrogen difluoromaleate monoanion is probed by X- ray crystallography and by the NMR method of isotopic perturbation in water, in two aprotic organic solvents, and in an isotropic liquid crystal. The X-ray crystal structure of potassium hydrogen difluoromaleate shows a remarkably short O–O distance of 2.41 Å and equal O–H distances of 1.206 Å, consistent with a strong and symmetric hydrogen bond. ...