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Proton Magnetic Resonance Studies of Amino Acid Complexes of Platinum(I1). 11. Kinetics of N-H and C-H Proton Exchange Luther E. Erickson, Arthur J. Dappen, and John C. Uhlenhopp Contributionfrom the Department of Chemistry, Grinnell College, Grinnell, Iowa. Received October 25, 1968 Abstract: Rates of N-H proton exchange for 1 and 2 were determined (a) by analysis of line-shape changes of H20 solutions at pH 8-1 1 and (b) by analysis of the slow spectral changes of D20 solutions observed at pD 2-6. The exchange reaction is OH- catalyzed over the whole pH range investigated. However, H20 catalysis contributes to the observed rate at pH
