Protic vs. Aprotic

[Gasedo]

a) CH3OH and b) NH3 are protic.
Why c) HCO2N(CH3)2 is considered aprotic? Protic solvents are polar molecules having a H that can form H-bond. I would say c) is also protic because of the first H in the molecule.
Can anybody explain?
Thanks

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[yzf600]

In (a) and (b) the Hydrogen is attached to the more electronegative atoms (oxygen and nitrogen respectively)

In (c) the hydrogen is attached to the carbon which is not that electroneg.

 

[everest]

a) CH3OH and b) NH3 are protic.
Why c) HCO2N(CH3)2 is considered aprotic? Protic solvents are polar molecules having a H that can form H-bond. I would say c) is also protic because of the first H in the molecule.
Can anybody explain?
Thanks

Looks like something else is missing in c). It's neither an amide nor an amino acid. Can you look into it and check if the chemical formula has been written correctly?

 

[Gasedo]

Looks like something else is missing in c). It's neither an amide nor an amino acid. Can you look into it and check if the chemical formula has been written correctly?

It is. There is a double bond btw C and O

 

[everest]

It is. There is a double bond btw C and O

The double bond need not be shown in a chemical formula unless it's otherwise a structural one.

It will make more sense to me that c) being written as HCON(CH3)2, an amide, instead of HCO2N(CH3)2.

 

[Gasedo]

The double bond need not be shown in a chemical formula unless it's otherwise a structural one.

It will make more sense to me that c) being written as HCON(CH3)2, an amide, instead of HCO2N(CH3)2.

Maybe you are right; I put the 2 there so I could show that is a double bond btw C and O.The double bond is shown in the formula. That's why I was confused too.
If you have Shaum’s organic chem. book you can check it out. It is problem 2.17, page 22