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Lewis Structure of POCL3?

Posted: Wed Oct 28, 2015 10:28 pm
by Antonio Melgoza 2K
Can the lewis structure of POCL3 have a single bond and 3 pairs of electrons or does it have to be a double bond with 2 pairs of electrons? And if it does need to have a double bond, why?

Re: Lewis Structure of POCL3?

Posted: Wed Oct 28, 2015 11:27 pm
by biaaancaaaa
You would have to leave the P-O bond as a double bond with two lone pair electrons because when you calculate the formal charge, it would be zero at every atom. If you left it as a single bond with three lone pairs, Oxygen would have a FC of -1 and P would have a formal charge of 1. Although you can do it both ways, double bonding would be the best option.