New Di- and Triorganotin(IV) Tyrosylalaninates as Models for Metal—Protein Interactions: Synthesis, Structural Characterization, and Potentiometric Studies of Tyrosylalanine, Glycyltyrosine, and Glycylisoleucine with Di- and Trimethyltin(IV) Moieties in Aqueous Medium

Figure 4

Speciation curves for 1 : 1 (a) dimethyltin-Tyr-Ala and (b) trimethyltin-HTyr-Ala where M = Me₂Sn²⁺ or Me₃Sn⁺.

(a)

(b)