Hydrogen Bonds

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Hydrogen Bonds

Postby Andrea_1H » Sun Dec 01, 2019 8:22 pm

Why would we consider lone pairs on N or O possible hydrogen bonding sites?

ishaa Diwakar 4E
Posts: 56
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Re: Hydrogen Bonds

Postby ishaa Diwakar 4E » Sun Dec 01, 2019 8:29 pm

Because the requirements for a H-bond to form are that there is an H bonded to a N, O or F, and that there is another N, O or F nearby that is charged or has a lone pair. Since the lone pair is negatively charged (electron), it can attract the partial positive charge of the hydrogen.

Ariana Iranmahboub1G
Posts: 114
Joined: Fri Aug 09, 2019 12:17 am

Re: Hydrogen Bonds

Postby Ariana Iranmahboub1G » Sun Dec 01, 2019 8:30 pm

Hydrogen bonds are only present between hydrogen atoms and nitrogen, oxygen, or fluorine. For this reason, only lone pairs on N, O, or F can be able to form a hydrogen bond as no other atom can.

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