New multidentate ligands. X. Chelating tendencies of N,N'-diglycylethylenediamine-N'',N'',N''',N'''-tetraacetic acid and ethylenediamine-N-N'-di(acetylglycine)-N,N'-diacetic acid
New multidentate ligands. X. Chelating tendencies of N,N'-diglycylethylenediamine-N'',N'',N''',N'''-tetraacetic acid and ethylenediamine-N-N'-di(acetylglycine)-N,N'-diacetic acid