Page 1 of 1

Oxalate Bidentate?

Posted: Fri Jun 08, 2018 3:48 pm
by Fiona Grant 1I
Why is oxalate bidentate? Aren't there four oxygens with lone pairs, meaning there are four potential binding sites, thus making it tetradentate?

Re: Oxalate Bidentate?

Posted: Fri Jun 08, 2018 3:48 pm
by Natalie Noble 1G
C2O4- is bidentate because the two O that are single bonded to the carbons can bind to a metal, and they chelating ligand, so it is bidentate. It cannot bind in single bond and double bond oxygen because it is not long enough (only 4 atoms) to make a ring. And the O that are double bonded to the carbons cannot rotate to bind to the metal as easily and they are stable formation. (i think? idk) So it is only bidentate