Oxolate Chelate

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Jasmine 2C
Posts: 148
Joined: Wed Sep 18, 2019 12:18 am

Oxolate Chelate

Postby Jasmine 2C » Thu Dec 05, 2019 12:17 am

Is oxolate (C204)2- considered bidenate because two of the oxygens at the ends have single sigma bonds (so they can rotate and bind to more sites) while the other two oxygens have pi bonds (so they can't rotate and donate their electron pairs)?

Myka G 1l
Posts: 68
Joined: Fri Aug 30, 2019 12:17 am

Re: Oxolate Chelate

Postby Myka G 1l » Thu Dec 05, 2019 10:57 am

Oxalate is bidentate because only two of the oxygens have a minus 1 charge that they use to form a bond with the central metal atom. The other two oxygens form a double bond with the carbon so they have a neutral formal charge.

Angela Patel 2J
Posts: 89
Joined: Sat Aug 24, 2019 12:17 am

Re: Oxolate Chelate

Postby Angela Patel 2J » Thu Dec 05, 2019 11:57 am

are chelates only bidentate?

KnarGeghamyan1B
Posts: 80
Joined: Fri Aug 09, 2019 12:15 am

Re: Oxolate Chelate

Postby KnarGeghamyan1B » Thu Dec 05, 2019 12:05 pm

Chelates are polydentates so 2 or more bonding sites.

Nuoya Jiang
Posts: 79
Joined: Sat Sep 14, 2019 12:17 am

Re: Oxolate Chelate

Postby Nuoya Jiang » Thu Dec 05, 2019 12:58 pm

No, chelates can form at least BIdentate.

Claire Stoecklein 1E
Posts: 49
Joined: Sat Jul 20, 2019 12:15 am

Re: Oxolate Chelate

Postby Claire Stoecklein 1E » Thu Dec 05, 2019 9:35 pm

Are polydentates with three bonding sites called tridentate? Or do we only specify bidentate?

Jasmine 2C
Posts: 148
Joined: Wed Sep 18, 2019 12:18 am

Re: Oxolate Chelate

Postby Jasmine 2C » Fri Dec 06, 2019 3:25 pm

Myka G 3J wrote:Oxalate is bidentate because only two of the oxygens have a minus 1 charge that they use to form a bond with the central metal atom. The other two oxygens form a double bond with the carbon so they have a neutral formal charge.

Does it matter if they have a negative bond or not? For molecules like ethylenediamine, the nitrogens that allow it to be bidentate have a neutral formal charge.


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