In part d, the question asks the ligand can be polydentate, and give the maximum number of places on the ligand that can bind simultaneously to a single metal center. For oxalate ion, the formula is C2O4 2-. I attached a picture.
Since there are lone pairs on 4 of the atoms, what makes it bidentate and donating 2 electron pairs instead of donating 4 electron pairs (because there are lone pairs on 4 of the atoms).
Textbook Problem 9C.5
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Re: Textbook Problem 9C.5
This is the pic, forgot to insert.
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Re: Textbook Problem 9C.5
Only two of the oxygen atoms can bind to metallic central atom, which makes it bidentate
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Re: Textbook Problem 9C.5
The single bonded oxygen atoms can make a coordinate covalent bond to another transition metal. It would make their formal charge zero if they did, as well, thus making this bidentate because of those two single bond atoms.
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