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pop000
Apr 18, 2011, 02:54 AM
I got 2 questions that says:
http://p1cture.me/images/81659023084671015693.jpg

1)i need to draw another 2 Resonance structure to the molecule in the red frame.
In the blue frame you can see my tried and I am not sure if is correct.

2) I need to decide if this molecule ( I speak about the molecule in the red frame)has a Dipole, so I mark in blue arrow the Electronegativity where is will be more strong,but is hard to decide if it have a Dipole.

So I need help here.
Thanks.

DrBob1
Apr 18, 2011, 05:40 AM
The two structures that you have drawn are indeed the two resonance structures for asprin.
There is polarity in the carboxylate groups (-COOR and -COOH) but the molecule will be only slightly polar. That's why is is poorly soluble in water.
Do you need a total of FOUR resonance structures? You can draw charged structures with the C=O groups but I wouldn't consider them true resonance structures.

pop000
Apr 18, 2011, 06:08 AM
I need to draw only 2 resonance structures 1 I showed you and other I will do.
About the has a Dipole you says that there is a polarity so I believe there is a Dipole ?
Thanks for answer.