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Published January 1980 | public
Journal Article

A 'shiftless' relaxation reagent for metal nuclide and nitrogen-15 magnetic resonance in aqueous solution

Abstract

Addition of small amounts of [Gd(2 : 2 : 1)]^(3+) cryptate to aqueous solutions containing ^(111)Cd^(2+) or formamide decreases metal nuclide or nitrogen-15 spin-lattice (T_1) relaxation times without affecting cadmium or nitrogen chemical shifts. This cryptate is thereby demonstrated to have substantial promise for greatly decreasing the time necessary to obtain natural abundance metal nuclide or ^(15)N NMR spectra with satisfactory signal-to-noise ratios for many compounds with long metal or ^(15)N relaxation times.

Additional Information

© 1980 Heyden & Son Ltd. Received 23 May 1979; accepted 18 July 1979. This work is supported by the National Science Foundation Grant CHE-78-10421 (to O.A.G.) and Grant CH-7604 760 (to J .D.R.) and by the Public Health Service, Grant GM-11072 (to J. D.R. from the Division of General Medical Sciences).

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023