Nitrogen bond dissociation energy

TABLE 19. Derived silicon-oxygen and silicon-nitrogen bond dissociation energies (kJmol-1)a... 

FIGURE 2.16 The bond dissociation energies, in kilojoules per mole of nitrogen, oxygen, and fluorine molecules. Note how the bonds weaken in the change from a triple bond in N, to a single bond in F,... 

Fig. 9 Deprotonation of cations radicals of synthetic analogs of NADH by oxygen or nitrogen bases in acetonitrile. Correlation between the intrinsic barrier and the homolytic bond dissociation energy of the cation radical (AH + —> A+ + H ).

Table 2. Bond dissociation energies of alkenes, alkynes, and aromatics Table 3. Bond dissociation energies of C/H/O compounds Table 4. Bond dissociation energies of sulfur-containing compounds Table 5. Bond dissociation energies of nitrogen-containing compounds Table 6. Bond dissociation of halocarbons...

TABLE D5 Bond Dissociation Energies of Nitrogen-Containing Compounds... 

The (at least approximate) validity of Eqs. (6.12)-(6.14) is clearly demonstrated by the remarkable quality of intrinsic CN bond energies and of bond dissociation energies calculated by means of nitrogen net atomic charges deduced in this manner. 

Straightforward applications of the theory are presented in the atom-by-atom approach, as exemplified in Table 15.4, using charges deduced from NMR shifts, Eq. (6.8) for the carbon atoms, and Eqs. (6.12)-(6.14) for the nitrogen atoms. (CN bond dissociation energies and comparisons with the corresponding intrinsic bond energies are described in Chapter 12 for both alkylamines and selected nitroalkanes.)... 

The correct answer is (D). Nitrogen has a triple bond and a bond order of 2. This. makes it the strongest bond, requiring it to have the largest bond-dissociation energy. ... 

The discussion of these data is made easier via their graphical representation as shown in Fig. 3-10. As can be deduced from the examples presented in Fig. 3-10 the threshold wavelength A-thw calculated from the bond dissociation energy D%g lies shghdy below the absorption onset Xonset only for the compounds nitrogen dioxide and ozone (see Tab. 3-5). The photodissociation of NO2 leads to the forma-... 

Table 3.6. Comparison of the results of various types of (local) density-functional calculations (LCAO-Za, LMTO-Aa, DV-Aa) with ah initio SCF Hartree-Fock and multiple-scattering Xa calculations (using overlapping spheres, OS) and experimental data (expt.) for equilibrium bond distance [i e(fl )] and bond dissociation energy (D in eV) in the nitrogen molecule (Nj)...

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