Interaction of monosaccharides and related compounds with oxocations of Mo(VI), W(VI) and U(VI) studied by NMR spectroscopy

Journal Article · Sun May 01 04:00:00 EDT 1988 · J. Coord. Chem.; (United States)

DOI:https://doi.org/10.1080/00958978808070771· OSTI ID:7256438

Geraldes, C F.G.C.; Castro, M M.C.A.; Saraiva, M E; Aureliano, M; Dias, B A

Proton, /sup 13/C and /sup 31/P nuclear magnetic resonance spectroscopy has been used to study the complexation of Mo(VI), W(VI) and U(VI) oxocations with various aldoses, cyclic polyols and ribose-5-phosphate in aqueous solution. The aldoses D-mannose, D-lyxose and D-ribose form tridentate complexes with Mo(VI) and W(VI) at pH similarly ordered 5, via the 1,2,3-hydroxyl groups, which are cis to each other in these sugars. Other aldoses, like D-arabinose, D-glucose, D-xylose and D-galactose form weaker bidentate complexes with those ions because they can only use the 1 and 3-cis hydroxyl groups in metal binding. These bidentate interactions also take place in the binding of U(VI) to D-mannose and D-ribose, at pH similarly ordered 10. However, sugars having 1,3,5-hydroxyl groups in the cis position do not form stable chelates with these oxocations, possibly due to steric crowding. In the case of ribose-5-phosphate, the phosphate group is the exclusive binding site for the three oxocations, except for U(VI) at very basic pH (pH > 10), where the hydroxyl groups also interact with UO/sub 2//sup 2 +/.

• Research Organization: Univ. of Coimbra (Portugal)
• OSTI ID: 7256438
• Journal Information: J. Coord. Chem.; (United States), Journal Name: J. Coord. Chem.; (United States) Vol. 17:3; ISSN JCCMB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPLEXES
ALDEHYDES
ARABINOSE
CARBOHYDRATES
CARBON 13
CARBON ISOTOPES
CHEMICAL REACTIONS
CHEMICAL SHIFT
COMPLEXES
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GALACTOSE
GLUCOSE
HEXOSES
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MANNOSE
MOLYBDENUM COMPLEXES
MONOSACCHARIDES
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PENTOSES
PH VALUE
PHOSPHORUS 31
PHOSPHORUS ISOTOPES
RESONANCE
RIBOSE
SACCHARIDES
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN COMPLEXES
URANIUM COMPLEXES
XYLOSE