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### oxidation numbers for ligands

Posted: Sat Dec 01, 2018 2:41 pm
I am confused as to how you calculate the oxidation number for ligands in a coordinate compound? If someone could give an example that would be greatly appreciated!

### Re: oxidation numbers for ligands

Posted: Sat Dec 01, 2018 7:07 pm
Well, oxidation number can be calculated from the charges of the ligands and the overall charge of the coordinate compound,
Example: [Fe(NCS)(OH2)5]2+ ,OH2 is neutral so it is not included in the calculations, there is one NCS which is an anionic ligand with -1 charge so this means the iron metal must have a +3 charge to make it so that the entire compound will end up with an overall charge of +2 (3-1=2). I'm assuming you meant the oxidation number for the metal not the ligands since the oxidation number of the ligands is just the charge of the anionic ligand.

### Re: oxidation numbers for ligands

Posted: Sat Dec 01, 2018 9:28 pm
In order to find oxidation numbers you have know the oxidation numbers of at least most of the molecule and then match the charge of the molecule.