Hydrogen Bonding Rules

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Brandon Valafar
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Hydrogen Bonding Rules

Postby Brandon Valafar » Thu Nov 21, 2019 5:40 pm

Hello,

For hydrogen bonding, would a Nitrogen atom having two lone pairs be considered as TWO hydrogen bonding sites or one? In other words, is one atom a hydrogen bonding site or one lone pair?

romina_4C
Posts: 100
Joined: Thu Jul 11, 2019 12:17 am

Re: Hydrogen Bonding Rules

Postby romina_4C » Thu Nov 21, 2019 5:40 pm

Each lone pair on an N, O, of F is considered a Hydrogen bonding site.

Janet Nguy 2C
Posts: 115
Joined: Sat Aug 24, 2019 12:17 am

Re: Hydrogen Bonding Rules

Postby Janet Nguy 2C » Thu Nov 21, 2019 5:55 pm

Each lone pair is considered a single Hydrogen bonding site; so if you have an Oxygen atom with 2 lone pairs attached to it, that would be considered two H-bonding sites.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: Hydrogen Bonding Rules

Postby HuyHa_2H » Thu Nov 21, 2019 10:04 pm

Each lone pair is a potential hydrogen bonding site, so in your case a nitrogen atom with TWO lone pairs would have TWO potential hydrogen bonding sites.

ValerieChavarin 4F
Posts: 99
Joined: Wed Sep 18, 2019 12:18 am

Re: Hydrogen Bonding Rules

Postby ValerieChavarin 4F » Sat Nov 23, 2019 3:54 pm

A hydrogen bond can occur for one lone pair of N,O, and F. Therefore, a nitrogen atom with 2 lone pairs can form 2 hydrogen bonds.

VioletKo3F
Posts: 103
Joined: Sat Sep 07, 2019 12:18 am

Re: Hydrogen Bonding Rules

Postby VioletKo3F » Sat Nov 23, 2019 4:08 pm

There are two nitrogen atoms with a lone pair each, so it makes sense for there to be two hydrogen bonding sites.

Noah Canio 3C
Posts: 55
Joined: Wed Sep 18, 2019 12:20 am

Re: Hydrogen Bonding Rules

Postby Noah Canio 3C » Sun Nov 24, 2019 6:27 pm

As everyone mentioned, yes, if nitrogen had two lone pairs, then those would be considered as two separate bonding sites for potential hydrogens to bind to. To answer your question, one lone pair is considered as a single hydrogen binding site.


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