CH3I3 vs. CH3Cl3

[shal3]

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In NMR which of these, CH3I3 vs. CH3Cl3, would be more downfield? and why? Also, assuming an I is attached to a benzene ring vs. another ring attached to a Cl, which would be more acidic and why?
I appreciate your help.

thank you

 

[klpennin]

In NMR which of these, CH3I3 vs. CH3Cl3, would be more downfield? and why? Also, assuming an I is attached to a benzene ring vs. another ring attached to a Cl, which would be more acidic and why?
I appreciate your help.

thank you

I would say CH3Cl3, because Cl is more electronegative than CH3I3.

 

[tranv117]

I would also think that CH3Cl3 is more downfield. Downfield= more deshielded. Since Cl is more electronegative than I, it would pull most of the electron density and therefore the methyl Hs will be more deshielded and more downfield.

 

[utdent20]

this is question out of the destroyer right?

 

[shal3]

This is frpm achiever. the first natural science test. I thought it was ch3cl3 also, but achiever said it's ch3I3 without any explanations so I'm REALLY confused???!!! and i thought ch3cl3 would be more acidic but now i don't know anymore.
anyone has any idea?

 

[shal3]

anyone?
PLZZZ??!!

 

[Andre3k]

that has to be an error it definitely is CH3Cl3. Cl is more electronegative

 

[Andre3k]

The benzene ring with Cl on it would be more electron withdrawing than the one with I so. The ring with Cl on it would be more acidic. Acids receive electrons. The more the electron density is pulled away from the ring the more likely the ring is to accept more electrons. (Hope thats right 😉)