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CH3Br, 271109 (1)Energy for CH3Br ->->-> CH3 + Br (2)Energy for CH3Br ->->-> CH2 + H + Br (3)Energy for CH3Br ->->-> CH2 + HBr (4)Energy for CH3Br ->->->

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Presentation on theme: "CH3Br, 271109 (1)Energy for CH3Br ->->-> CH3 + Br (2)Energy for CH3Br ->->-> CH2 + H + Br (3)Energy for CH3Br ->->-> CH2 + HBr (4)Energy for CH3Br ->->->"— Presentation transcript:

1 CH3Br, (1)Energy for CH3Br ->->-> CH3 + Br (2)Energy for CH3Br ->->-> CH2 + H + Br (3)Energy for CH3Br ->->-> CH2 + HBr (4)Energy for CH3Br ->->-> H2 +C(3P)+ HBr (5)Energy for CH3Br ->->-> H2 +C(1D)+ HBr (6)Energy for CH3Br ->->-> H2 +C(1S)+ HBr agust,www,...Nov09/PPT ak.ppt

2 CH 3 Br(g) CH 3 (g) + Br(g)) 70.3 kcal mol -1 = cm -1 Handbook of bond energies:

3 D(CH 2 -H) = kcal mol > cm-1 x cm-1/ kcal mol eV = = -D 0 0 (HBr) Huber and Herzberg: Constants of diatomic molecules

4 CH 3 Br(g) > CH3 + Br > CH2 + H + Br = (1) CH2 + HBr cm-1 (2)

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

6 Fragments:Value / cm-1Refs: H2 + C**(1S) + HBr (see above) ( ) H2 + C**(1S) + HBr (see above) ( ) H2 + C**(1S) + HBr (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 kcal mol-1 (see above) cm-1 x cm-1/ kcal mol-1 - D(H2) = (see above) cm * * =

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

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


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