TRANSITION-METAL SACCHARIDE CHEMISTRY - D-GLUCOSE COMPLEXES OF MN(II), CO(II), NI(II), CU(II) AND ZN(II)

Abstract

Metal complexes of D-glucose (D-Glc) from large cation containing dibromo-dichloro salts of dipositive metals [NEt(4)](2)[MBr(2)Cl(2)] (M = Mn, Co, Ni, Cu and Zn) and the disodium salt of glucose were synthesized from a MeOH:MeCN mixture. The complexes were characterized by UV-vis absorption, circular dichroism, IR and proton magnetic resonance spectroscopies, and by elemental analysis, and were found to be Na[M(D-Glc)(OMe)Cl]. Cyclic voltammetric studies of these complexes, in the acidic to neutral pH range, indicated no dissociation, even in highly acidic conditions.