The correct order of decreasing length of the | vedclass

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Question

(C) The bond length is inversely proportional to the double bond character. Resonance increases the double bond character, thereby decreasing the bond

Vedclass · Accepted Answer

$III > II > I$

Vedclass · Answer

(C) The bond length is inversely proportional to the double bond character. Resonance increases the double bond character, thereby decreasing the bond length.In structure $I$, the positive charge is in direct conjugation with the double bond, leading to significant double bond character.In structure $II$, the positive charge is also in conjugation, but the presence of two positive charges creates a different electronic environment compared to $I$.In structure $III$, the positive charge is separated from the double bond by a $CH_2$ group, so there is no resonance-induced double bond character.Therefore, the bond length follows the order: $III > II > I$.

The correct order of decreasing length of the bond as indicated by the arrow in the following structures is:

Similar Questions

Which of the following species does not exert a resonance effect?

The correct order of stability for the given canonical structures is:
$(I)$ $H-C(=O)-CH_2^-$
$(II)$ $H-C(O^-)(^+)-CH_2^-$
$(III)$ $H-C(O^-)=CH_2$

Compare the carbon-carbon double bond rotation energy for the following compounds $A$,$B$,and $C$:

Which of the following species has a positive charge that is not involved in resonance?

Identify the compound in which steric inhibition of resonance is present.

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