Recently, I have calculated the bond dissociation energy of five compounds( 4-CH3O-C6H4N(CON(CH3)2)-NO ， 4-CH3-C6H4N(CON(CH3)2)-NO, 4-H-C6H4N(CON(CH3)2)-NO, 4-Cl-C6H4N(CON(CH3)2)-NO, 4-NO2-C6H4N(CON(CH3)2)-NO), the scission bond length of the five compounds are1.3585, 1.3588, 1.3902, 1.3910, 1.3931,respectively. but their BDEs are 28.3, 28.7, 29.1, 29.2, 33.1.
Generally, we know that the shorter the bond length, the stronger the BDE. But in this example, obviously, it is not the case, I don't know how to explain the question. can you help me? thank you
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Topic: bond length and bond dissociation energy (Read 3250 times)