Understanding σH Adducts: Definition and Explanation

[lmarcantel1]

What is a σH adduct? I understand what an adduct is, I am just not sure what the σH is referring to. I could take a few wild guesses; but I've learned that going "John Wayne" doesn't always lead to the the correct answer. (Its cool looking, but not very effective...)

Thanks!

 

[chemisttree]

"The product formed by the attachment of an electrophilic or nucleophilic entering group or of a radical to a ring carbon of an aromatic species so that a new sigma bond is formed and the original conjugation is disrupted."

From http://goldbook.iupac.org/A05436.html"

 

[lmarcantel1]

What about σ^D adducts? Where does the H and D superscripts come from?

 

[chemisttree]

H is hydrogen. Can you tell what D might be?

 

[nimmysnv]

H is hydrogen. Can you tell what D might be?

According to me D stands for density and this is what I know as, these are the things that comes in chemical terms and they are used for all the equations that are always used.


Thanks!

 

[Borek]

No, D doesn't stand for density here.

Hint: T doesn't stand for time

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