Single bond dissociation energies

As the localized charge concept, the electronegativity concept has been the subject of several definitions [e.g. 28,29], The earliest definitions, due to Pauling [30] and Mulliken [31], involve thermodynamic or spectroscopic properties, respectively. In Pauling s scheme [30,32] electronegativities are introduced as a set of differences Xa Xb between atoms A and B of the periodic table defined from single-bond dissociation energies D(X - T) (X, Y = A, B) as ... 

Before proceeding to a discussion of their structures, we pause to establish a set of reference N-N, N-0 single and N=0 double bond distances and bond energies. See Fig. 20.7. The reference N-N single bond dissociation energy is calculated as the energy of the reaction... 

TABLE 1.6 Typical Single Bond Dissociation Energies (kJ/mol, In black) and Bond Distances (pm, in green) for Selected p-Block Elements... 

Results from 1, 3, and 4 above should be compared with experimental C O single bond dissociation energies for zero-valent d metal hexacarbonyls [i.e., M(C=0)6]. 

QUIZ Use the single-bond dissociation energies of Table 10.1 (page 202) ... 

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