1 / 11

HBr Energetics agust,www,....hbr/PPT-180112ak agust, heima,...HBr/XLS-180112ak.xls

HBr Energetics agust,www,....hbr/PPT-180112ak.ppt agust, heima,...HBr/XLS-180112ak.xls. http://www.sartep.com/chem/chartsandtools/bondenergy.cfm :. http://www.wiredchemist.com/chemistry/data/bond-energies-lengths Bond D (kJ/mol)r (pm)

orpah
Télécharger la présentation

HBr Energetics agust,www,....hbr/PPT-180112ak agust, heima,...HBr/XLS-180112ak.xls

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. HBr Energetics agust,www,....hbr/PPT-180112ak.ppt agust, heima,...HBr/XLS-180112ak.xls

  2. http://www.sartep.com/chem/chartsandtools/bondenergy.cfm : http://www.wiredchemist.com/chemistry/data/bond-energies-lengths BondD (kJ/mol)r (pm) H-Br 362 141 http://jcp.aip.org/resource/1/jcpsa6/v56/i6/p2713_s1?isAuthorized=no he bond dissociation energy of HBr (88 kcal∕mole) H & H: D00 = 3.758 eV = 30310.3028 cm-1

  3. agust, heima,...HBr/XLS-180112ak.xls

  4. 139978.77 H + + Br (n) = number of photons 130 k 125584.8 H + Br + Total scan range for HBr (3) cm-1 112849.6 H + + Br- HBr+ + e; 94205.51806 cm-1 H + Br**(4P;5s) 90 k 93736.45 86000 (2) 83723.2 Lowest energy Br** 74000 60 k 43000 (1) 41861.6 33985.24 cm-1 H + Br*(1/2) 37000 30 k 30300 cm-1 H + Br

  5. NIST: HBr NIST: IE(Br) = 95 284.8cm-1 Br NIST:

  6. Comments: • The threshold 83723.2 cm-1 amentioned in slide 4 could be the major reason for • The large I(Br+)/I(HBr+) ratio observed for: • E(v´=3), n0 = 84249.6 cm-1see: https://notendur.hi.is/jil3/work/HBr/E%20states%20for%20HBr.pdf • H(v´=2), n0 = 84042.1 cm-1see: https://notendur.hi.is/jil3/work/HBr/H%20states%20for%20HBr.pdf • What are the IR for V(m+14) and higher V levels like???? Are these perhaps • showing negligible HBr+ signals?! • I can not find REMPI spectra for this region. Where do I find processed REMPIspectra for n0 > 83000 cm-1? a: that energy corresponds to a threshold, - below which four photons are needed to form Br+ (i.e. (2r + 2i) REMPI) and - above which three photons are needed to form Br+ (i.e. (2r + 1i) REMPI

  7. 139978.77 H + + Br (n) = number of photons 130 k H + Br + 125584.8 Total scan range for HBr (3) H + + Br- cm-1 112849.6 HBr+ + e; 94205.51806 cm-1 H + Br**(4P;5s) 90 k 93736.45 86000 (2) 83723.2 Lowest energy Br** 74000 60 k 91599.56 95284.8 43000 (1) 41861.6 33985.24 cm-1 H + Br*(1/2) 37000 30 k 30300 cm-1 H + Br 3 photons are needed to ionize Br and Br* in the excitation region

  8. Fig. 1 for HBr-FvsV-paper:

More Related