Multinuclear magnetic resonance study of the co-ordination of aluminium(III) with glycolic acid in aqueous solution, compared to co-ordination with oxalic and malonic acid
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 7,p. 2137-2143
- https://doi.org/10.1039/dt9900002137
Abstract
The co-ordination of AlIII with glycolic acid in aqueous solution was investigated with the use of 1H, 13C, 17O, and 27Al n.m.r. techniques. High-field 27Al n.m.r. spectroscopy allowed the observation of 1 : 1, 1 : 2, 1 : 3, and polynuclear complexes of AlIII with glycolic acid. A gradual shift in the 1H, 13C, and 27Al n.m.r. spectra indicated that ionization of the hydroxy group of co-ordinated glycolate starts at pH 3.17O N.m.r. measurements showed unambiguously the bidentate co-ordination of oxalic, malonic, and glycolic acid with AlIII. Solid-state 27Al ‘magic-angle’ spinning (m.a.s.) and 13C cross-polarization (c.p.) m.a.s. n.m.r. spectroscopy were employed to study powdered single crystals of a 2 : 6 aluminium(III)–glycolate complex.Keywords
This publication has 0 references indexed in Scilit: