page_title: EDDHA
hierarchical_section_title: EDDHA
caption_attribution_description: English: Structure of anion [Mn(EDDHA)]-
context_page_description: EDDHA or ethylenediamine-N, N′-bis is a chelating agent. Like EDTA, it binds metal ions as a hexadentate ligand, using two amines, two phenolate centers, and two carboxylates as the six binding sites. The complexes are typically anionic. The ligand itself is a white, water soluble powder. Both the free ligand and its tetraanionic chelating agent are abbreviated EDDHA. In contrast to EDDHA, most related aminopolycarboxylic acid chelating agents feature tertiary amines and few have phenolate groups.
context_section_description: EDDHA or ethylenediamine-N,N′-bis(2-hydroxyphenylacetic acid) is a chelating agent.  Like EDTA, it binds metal ions as a hexadentate ligand, using two amines, two phenolate centers, and two carboxylates as the six binding sites.  The complexes are typically anionic.  The ligand itself is a white, water soluble powder.  Both the free ligand and its tetraanionic chelating agent are abbreviated EDDHA.  In contrast to EDDHA, most related aminopolycarboxylic acid chelating agents feature tertiary amines and few have phenolate groups.
caption: Structure of anion [Mn(EDDHA)]−, which is representative of related C2-symmetric complexes.[1]
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