1. CH3Br,
Energy for CH3Br ->->-> CH3 + Br
Energy for CH3Br ->->-> CH2 + H + Br
Energy for CH3Br ->->-> CH2 + HBr
Energy for CH3Br ->->-> H2 +C(3P)+ HBr
Energy for CH3Br ->->-> H2 +C(1D)+ HBr
Energy for CH3Br ->->-> H2 +C(1S)+ HBr
agust,www,...Nov09/PPT ak.ppt

2. CH3Br(g) CH3(g) + Br(g)) 70.3 kcal mol-1 = +24587.8 cm-1
Handbook of bond energies:
CH3(g) + Br(g))

3. D(CH2-H) = 110.4 kcal mol-1 ----------> 38612.956 cm-1
x cm-1/ kcal mol-1
D(CH2-H) = kcal mol > cm-1
3.758 eV = = -D00(HBr) Huber and Herzberg:
Constants of diatomic molecules

4.
= (1)
CH3Br(g) > CH3 + Br > CH2 + H + Br
CH2 + HBr
cm-1 (2)

5. Energetics for CH3Br -> fragments:
Summary:
Energetics for CH3Br -> fragments:
Fragments:
Value / cm-1
Refs:
CH3 + Br
cm-1
Handbook of bond energies:
CH2 + H + Br
cm-1
PPT ak.ppt
CH2 + HBr
cm-1
H2 + C + HBr
62109 cm-1
PPT ak.ppt
59329 cm-1
PPT ak.ppt evaluated by AK
58840
From A.B. / and later
H2 + C*(1D) + HBr
62109 (see above) + 10  (
59329 (see above) + 10  (
58840 (see above) + 10  (

6. Fragments: Value / cm-1 Refs:
H2 + C**(1S) + HBr
62109 (see above) (
59329 (see above) (
58840 (see above) (
CH + H2 + Br
See below, slide 8
C+ H + H2 + Br
See below, slide 10

7. CH3Br -> CH + H2 + Br:
CH3Br -> CH2 + H + Br: cm-1 (see above)

8. *
CH3Br CH + H2 + Br:
cm-1
CH2 + H + Br CH + H + H + Br
- D(H2) = (see above)
cm-1
kcal mol-1 (see above)
cm-1
x cm-1/ kcal mol-1
* =

9. CH3Br -> CH + H2 + Br:
CH3Br -> CH2 + H + Br: cm-1 (see above)

10. +D(CH) = 80.9 kcal mol-1 (se above)
cm-1 *
CH3Br C+H + H2 + Br
CH + H2 + Br
+D(CH) = 80.9 kcal mol-1 (se above)
cm-1
x cm-1/ kcal mol-1 * *=