N-Benzyliminodiacetic acid

Preparation of Ligands. The ligands used in this study were prepared by methods given in the literature N-methyliminodiacetic acid (4) N-benzyliminodiacetic acid (4) N-phenyliminodiacetic acid (7) ... 

The trends in the formation constants of the complexes reported here are much the same as reported previously for similar ligands. The over-all behavior of the chelates of N-benzyliminodiacetic acid and IV-methyliminodiacetic acid is virtually identical to that of iminodiacetic acid itself (13). The only major difference is attributed to the different basicities of the ligands which determines the absolute magnitude of the log Ki values but has little affect on the trends from one metal ion to another. For both ligands, the position of yttrium is in the heavy earths for both log Ki and log K2, although the actual value is slightly less than the normal value. 

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