Question

Coordination Compound Naming! I have 6 compounds to name. I named all 6, but please check...

Coordination Compound Naming!

I have 6 compounds to name. I named all 6, but please check my answer and if wrong, please explain why and how to do it. Thank you so much!

1. [Pt(NH3)4Cl2]SO4  - tetraamminedichloroplatinum (IV) sulfate

2. K3[Mo(CN)6F2] - potassium hexacyanodifluoromolybdenate (V)

3. K[Co(EDTA)] - potassium ethylenediaminetetraacetate cobaltate(III) Note: For the cobalt oxidations state, I calculated it to be +3 because EDTA has a charge of -4 and and K is +1. So, it needs to be +3 to neutral. However, my friends got +1 and I do not quite understand why and who is correct.

4. Co(NH3)3(NO2)3 - triamminetrinotrocobalt (III)

5. [Fe(en)3][IrCl6] - tris(ethylenediamine)iron (0) hexachloroiridiate (VI) Note: as you can see this is the one I need help with. I thought both complexes had to be neutral and since en is 0, Fe is 0. Cl is 6(-1) making Ir +6. But when it comes to naming Fe in a cation complex, is it just written as iron? In anionic form, I know it has to be ferrate.

6. Ca3[Ag(S2O4)2]2 - calcium bis(dithionate)aurate (I) Note: since dithionate is an anion in this complex, would the name change to dithionato?

Thank you so much!

Homework Answers

Answer #1

1. [Pt(NH3)4Cl2]SO4  - tetraamminedichloroplatinum (IV) sulfate ........ correct

2 . K3[Mo(CN)6F2] - potassium hexacyanodifluoromolybdenate (V)......correct

3
K[Co(EDTA)]  
potassium monoethylenediaminetetraacetocobaltate (III) ......correct

4. Co(NH3)3(NO2)3 - triamminetrinotrocobalt (III).......correct

5   [Fe(en)3][IrCl6] - tris(ethylenediamine)iron (0) hexachloroiridiate (VI)....correct

6   Ca3[Ag(S2O4)2]2   Sodium bisthiosulphatoagentate

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