I've drawn one structure where there's a -1 charge on one of the oxygens. In another structure, I've come up with a +1 charge on the other oxygen. Is the last structure correct? seeing that the molecule initially has a negative charge?
2007-02-02 04:17:55 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
I think that's wrong. The negative ion resonates back and forth between the two oxygen molecules. The way you can trace the ion is the negative ion jumps in between the oxygen and the carbon to form a double bond, and one of the double bonds on the other oxygen jumps to the tip of the oxygen to form a negative ion.
2007-02-02 04:28:29 · answer #1 · answered by Sax M 6 · 0⤊ 0⤋
Go to the website I listed in the source. The acid moiety is:
-C=O
|
O-
That negative bond can bounce back and forth between the two oxygens. So another structure is:
-C-O-
||
O
Sometimes people draw a dotted curved line between the two oxygens and then a the negative sign that's circled to indicate this resonance.
But there is definitely NOT a +1 charge anywhere.
Hope this helps!
2007-02-02 04:47:16 · answer #2 · answered by doctoru2 4 · 0⤊ 0⤋
No - a C=O to one oxygen, and a C-O- on the other (that's a single bond to O, which also has a minus charge). The other resonance hybrid swaps over the double bond and the single bond plus negative charge.
2007-02-02 04:29:20 · answer #3 · answered by Gervald F 7 · 0⤊ 0⤋
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