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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Vargulf on July 04, 2017, 03:36:42 PM

Title: denticity
Post by: Vargulf on July 04, 2017, 03:36:42 PM

Hi,
I need some help with an assignment. I have to draw in all atoms from the gallic acid, which are able to bond to metal cations, which of those oxygen atoms are able to bond with metal cations?
Another question is, what the denticity of the Gallic acid. I guess it is two, because it can bond with two oxygen atoms at the same time with a central atom. Is it right?Please help me.

Thank you

Title: Re: denticity
Post by: Babcock_Hall on July 11, 2017, 10:31:18 AM

Your drawing on the left is missing a carbon atom.  The carboxylic acid functional group can also be a ligand to a metal ion.

Title: Re: denticity
Post by: Vargulf on July 15, 2017, 12:08:31 PM

Thank you so much. Do you know what the denticity of this compound is or do you know a way to figure it out? If so your help would be very appreciated.

Title: Re: denticity
Post by: Babcock_Hall on July 17, 2017, 07:46:39 AM

I have not heard that particular term before, but it might mean the number of sites on the molecule that can bind to a chemical species.

Title: Re: denticity
Post by: Vargulf on July 25, 2017, 07:56:10 AM

Thank you very much.

Title: Re: denticity
Post by: Vidya on July 27, 2017, 09:31:41 AM

Quote from: Vargulf on July 04, 2017, 03:36:42 PM

Hi,
I need some help with an assignment. I have to draw in all atoms from the gallic acid, which are able to bond to metal cations, which of those oxygen atoms are able to bond with metal cations?
Another question is, what the denticity of the Gallic acid. I guess it is two, because it can bond with two oxygen atoms at the same time with a central atom. Is it right?Please help me.

Thank you

Gallic acid has 5 Oxygens On it and 4  Oxygens of OH have lone pairs.They all are electron donor Sites for any Metal ion.So its density is 4.