Draw the geometrical structure of [Co(NH3)5NO2]2+ and [Co(NH3)5ONO]2+ and write the name of each isomer.
a) Which isomer is thermodynamically more stable ? Why?
b) How can you distinguish nitro and nitrito isomers by IR spectroscopy?
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The two isomers are: [Co(NH3)5ONO]Cl2 and [Co(NH3)5NO2]Cl2. 1. Draw Lewis structures for both isomers, making sure to highlight what the difference between them is, and what the charge on cobalt is. (Note: In your drawing, you don't have to draw the entire structure and all the bonds within each ammonia ligand (the N-H bonds), but you should for the NO2. It should be clear what atom from each ligand binds to the cobalt ion). 2. Which isomer do you expect...
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Balanced chemical equation for synthesis of [Co(NH3)5ONO]Cl2 and balanced chemical equation for synthesis of [Co(NH3)5NO2]Cl2 This is what we are given: Nitritopentaaminecobalt(III) chloride is formed by reacting chloropentaaminecobalt(III) chloride with NaNO2. This simply replaces a chloride that's bonded directly to the cobalt with an NO2 group that's bonded (at least initially) through the [Co(NH3)5Cl]Cl2 + NaNO2 ⟶⟶ [Co(NH3)5ONO]Cl2 + NaCl (5) This product will slowly convert into the nitro isomer if left at room temperature for 1-2 weeks. The conversion...
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