# Why is it important to describe the resonance structures in molecules such as ozone, O_3, and the organic molecule benzene, C_6H_6?

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May 1, 2017

Because it helps to explain and rationalize experiment; if you like it explains reality.

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Ozone is a bent molecule. That's the experimental fact. A Lewis structure of $O = \stackrel{+}{O} - {O}^{-}$ in which there are 3 regions of electron-density around the central atom explains this geometry. It also explains the trigonal planar geometry of $C {O}_{3}^{2 -}$. The benzene molecule, ${C}_{6} {H}_{6}$, crops up persistently in organic chemistry. It is reactive under certain circusmtances, but not as reactive and not reactive in the same way as an olefin or an alkyne.

Our ideas of resonance can help rationalize the observed reactivity. The idea of $6$ $\pi$ electrons delocalized around a 6-membered ring can be extended to inorganic chemistry. Borazine, ${B}_{3} {N}_{3} {H}_{3}$, a benzene analogue, is isostructural and isoelectronic with benzene, and has similar aromatic chemistry.

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Feb 5, 2017

It is very important to describe the resonance structures in molecules, because resonance tells us of how stable such molecule or compound is. It could be done by studying each contributing resonance structures thermodynamically.

#### Explanation:

According to Resonance Theory, the molecule or ion can be represented by two or more Lewis structures that differ only in the position of the electrons, two things will be true:
-None of these contributing structures will be a realistic representation for a molecule or ion
-The actual molecule or ion will be better represented by a hybrid(average) of these structures..

In the case of ozone, It has two contributing structures. Benzene also has two contributing resonance structures. Through resonance we understand why molecules undergoes such type of reaction, why this molecules react or not when introduce to other molecules. By understanding where electrons go we can predict the reactivity of these molecules. That's how resonance important to us chemist...

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Jan 8, 2017

Ozone on the basis of the three-electron bond.

Using three-electron bond one can explain structure of ozone, carbonate anion, carboxylate anion, oxygen molecule, structure of nitrate anion, nitrogen monoxide, naphthalene and other organic and non-organic compounds.

It is easy to show, that relation multiplicity = f(L) and Е = f(L), where multiplicity is multiplicity of bond, L – length of bond in Å, Е – energy of bond in kj/mole will be described by function y = a + b/x + c/x² for any types of bond (C-N, C-O, C-S, N-N, N-O, O-O, C-P).

1. p.27, p. 19-29, Structure of the benzene molecule on the basis of the three-electron bond. http://vixra.org/pdf/1606.0152v1.pdf

2. A Short analysis of chemical bonds. http://vixra.org/pdf/1606.0149v2.pdf

REVIEW. Benzene on the basis of the three-electron bond (full version, 93 p.). http://vixra.org/pdf/1612.0018v5.pdf

http://vixra.org/author/bezverkhniy_volodymyr_dmytrovych

http://vixra.org/author/bezverkhniy_volodymyr_dmytrovych

https://www.amazon.com/Volodymyr-Bezverkhniy/e/B01I41EHHS/ref=sr_ntt_srch_lnk_1?qid=1471783006&sr=1-1

https://archive.org/details/@threeelectronbond

https://www.scribd.com/user/289277020/Bezverkhniy-Volodymyr#

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