popjinx Posted October 13, 2004 Share Posted October 13, 2004 Can anyone explain to me how exactly EDTA forms 1:1 complexes with any metal ion despite their charge?? I know that it forms a ring with the metal cation, but I can't seem to figure out how something with a Charge of 4- only reacts once with a metal cation no matter its charge. Can someone please enlighten me??? Link to comment Share on other sites More sharing options...
budullewraagh Posted October 13, 2004 Share Posted October 13, 2004 i believe that the reason for this is that hydrogen bonds to all the negative areas that the cation does not bond to Link to comment Share on other sites More sharing options...
Skye Posted October 13, 2004 Share Posted October 13, 2004 EDTA is a fairly large molecule, and it is also fairly flexible. It wraps around the metal ion so that its six binding sites are all in contact, and in a tetrahedral geometry. As a general answer to the charge question, the electronic structure of transition metals allows them to form fairly stable ions. Link to comment Share on other sites More sharing options...
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