The protonation state and binding mode in a metal coordination complex from the charge measured in solution by electrophoretic NMR

• We measured with high accuracy the effective charge of a uranium (VI)-AMP complex by electrophoretic NMR (eNMR). Using the same method, the degree of counterion association is also assessed which leads to a quantitative determination of the nominal charge which then provides the degree of ligand deprotonation in the complex. This demonstrates a new application of eNMR for resolving structural details of supramolecular complexes.

Subject headings

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Keyword

Multinuclear Nmr

Stability-Constants

Uranyl Acetate

Ions

Polyelectrolytes

Nucleotides

Uranium

Cells

Publication and Content Type

ref (subject category)

art (subject category)