seven platinum ( ii ) complexes of the type [ pt ( bipy ) ( aa ) ] n+ ( where n = 1 or 0 and aa is anion of l-valine , l-isoleucine , l-aspartic acid ( dianion ) , l-glutamic acid ( dianion ) , l-glutamine , l-proline , or s-methyl-l-cysteine ) have been prepared and characterized .
C0061472
l-glutamic
C0017797
l-glutamine