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CH3Br, Energy for CH3Br ->->-> CH3 + Br

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Presentation on theme: "CH3Br, Energy for CH3Br ->->-> CH3 + Br"— Presentation transcript:

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  (http://physics.nist.gov/cgi-bin/ASD/energy1.pl) 59329 (see above) + 10  (http://physics.nist.gov/cgi-bin/ASD/energy1.pl) 58840 (see above) + 10  (http://physics.nist.gov/cgi-bin/ASD/energy1.pl)

6 Fragments: Value / cm-1 Refs:
H2 + C**(1S) + HBr 62109 (see above) (http://physics.nist.gov/cgi-bin/ASD/energy1.pl) 59329 (see above) (http://physics.nist.gov/cgi-bin/ASD/energy1.pl) 58840 (see above) (http://physics.nist.gov/cgi-bin/ASD/energy1.pl) 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 * *=


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