IUPAC Name of EDTA: 2,2′,2″,2′″-(ethane-1,2-diyldinitrilo-)κ^2N

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The IUPAC name for EDTA is correctly identified as 2,2′,2″,2′″-(ethane-1,2-diyldinitrilo-)κ^2N)tetraacetato-κ^4O, according to the IUPAC Nomenclature of Inorganic Chemistry. EDTA coordinates through nitrogen and oxygen atoms, with no metal-carbon bonds present. The use of the "yl" suffix in the name is clarified, as it indicates substitution for hydrogen rather than a metal-carbon bond, contrasting with organometallic nomenclature where "yl" signifies such bonds.

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Wrichik Basu
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As per IUPAC Nomenclature of Inorganic Chemistry, the correct name of the edta chelate is $$\text{2,2′,2″,2′″-(ethane-1,2-diyldinitrilo-} κ^2 \text{N)tetraacetato-}κ^4O $$ As far as I know, edta coordinates through Nitrogen and Oxygen atoms, and there is no metal-carbon bond.

On the other hand, the "yl" in the name indicates a metal-carbon bond, because the "yl" or "ido" suffixes are for organometallic compounds. For example, the complex ##[Ti(CH_2 CH_2 CH_3) Cl_3] ## compund is named ##\text{trichlorido(propan-1-yl)titanium}## as per the organometallic nomenclature system.

Then why has the "yl" suffix been used in edta?
 
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