Abstract
Natural abundance 13C nuclear magnetic resonance spectroscopy ( 13C NMR) was used to study the mode of binding of Mn 2+ and Cu 2+ to the cyclitol, cis-inositol. Resonance linewidths and the electron nuclear relaxation rates [( T 1 e) −1 values] were used to establish that a unique binding site exists for these metal-ions on this cyclitol involving only the three axial hydroxyl groups. This work may aid in the development of new organometallic complexes used as paramagnetic relaxation agents in magnetic resonance imaging research.
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