Homework 3.99

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Alex McCorriston Dis 3A
Posts: 18
Joined: Fri Sep 29, 2017 7:04 am

Homework 3.99

Postby Alex McCorriston Dis 3A » Sun Nov 05, 2017 1:48 pm

In 1999, Karl Christe synthesized and characterized a salt that contained the N5 cation, in which the ve N atoms are connected in a long chain. This cation is the rst all-nitrogen species to be isolated in more than 100 years. Draw the
most important Lewis structure for this ion, including all equivalent resonance structures. Calculate the formal charges on all atoms.

I'm pretty confused about how to determine whether the atoms should have single, double, or triple bonds. Also, if it's impossible for all of the atoms to have a formal charge of 0, what would be the most stable alternative?

Thanks!

Eryn Wilkinson 3H
Posts: 20
Joined: Fri Sep 29, 2017 7:07 am

Re: Homework 3.99

Postby Eryn Wilkinson 3H » Sun Nov 05, 2017 2:42 pm

I think this is really just trial and error! It helps to draw it the way Professor did in lecture where you draw it with all single bonds first and then change some of the lone pairs to double bonds to make sure that it is the correct number of electrons. Also just remember that N can't have an expanded octet, so a triple bond couldn't be next to a double bond.


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