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agust, heima,...HBr/XLS ak.xls HBr D: 363kJ mol-1http://www.sartep.com/chem/chartsandtools/bondenergy.cfm cm-1 362kJ mol-1http://www.wiredchemist.com/chemistry/data/bond-energies-lengths kcal mol-1http://jcp.aip.org/resource/1/jcpsa6/v56/i6/p2713_s1?isAuthorized=no eVH&H book cm-1 ca.30300cm-1 f1:8.36E+01cm-1 / (kJ mol-1) f2:3.50E+02cm-1 / (kcal mol-1) f3: cm-1/eV E(4P; 5s) = cm IE=11.68eV Energetics IE= cm-1 IE(Br)= cm-1 E(S/O;Br)= cm-1 E(H+Br*(1/2)) = E(H+Br+ + e)= IE(H) = E(H+ + e + Br) EA(Br) = eVhttp://en.wikipedia.org/wiki/Electron_affinity_%28data_page% cm-1 E(H+ + Br-)=
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HBr
Energetics
agust,www,....hbr/PPT-180112ak.pptagust, heima,...HBr/XLS-180112ak.xls
http://www.sartep.com/chem/chartsandtools/bondenergy.cfm :
Bond Dissociation Energies
Bond Bond Energy (kj/mol)
H—H 432
H—F 565
H—Cl 427
H—Br 363
http://www.wiredchemist.com/chemistry/data/bond-energies-lengths BondD (kJ/mol)r (pm) H-Br 362 141
he bond dissociation energy of HBr (88 kcal∕mole)
http://jcp.aip.org/resource/1/jcpsa6/v56/i6/p2713_s1?isAuthorized=no
H & H: D00 = 3.758 eV = 30310.3028 cm-1
agust, heima,...HBr/XLS-180112ak.xls
HBr D:
363kJ mol-1 http://www.sartep.com/chem/chartsandtools/bondenergy.cfm 30344.4264cm-1
362kJ mol-1 http://www.wiredchemist.com/chemistry/data/bond-energies-lengths 30260.833 88kcal mol-1 http://jcp.aip.org/resource/1/jcpsa6/v56/i6/p2713_s1?isAuthorized=no 30778.4436
3.758eV H&H book 30310.3028cm-1 ca. 30300cm-1f1: 8.36E+01cm-1 / (kJ mol-1)
f2: 3.50E+02cm-1 / (kcal mol-1) f3: 8065.54093cm-1/eV E(4P; 5s) = 63436.45cm-1 93736.45
IE= 11.68eVhttp://webbook.nist.gov/cgi/cbook.cgi?ID=C10035106&Units=SI&Mask=20#Ion-Energetics
IE= 94205.51806cm-1 IE(Br)= 95284.8cm-1 E(S/O;Br)= 3685.24cm-1 E(H+Br*(1/2))= 33985.24 E(H+Br+ + e)= 125584.8 IE(H) = 109678.7717 E(H+ + e + Br) 139978.7717
EA(Br) = 3.36359eV http://en.wikipedia.org/wiki/Electron_affinity_%28data_page%29 27129.1728cm-1E(H+ + Br-)= 112849.5989
30 k
60 k
90 k
H + Br30300 cm-1
93736.45H + Br**(4P;5s)
Lowest energy Br**
HBr+ + e; 94205.51806 cm-1
H + Br*(1/2)33985.24 cm-1
H + Br +125584.8
139978.77 H + + Br
74000
86000
41861.643000
37000
83723.2
Total scanrange for HBr H + + Br-112849.6cm-1
130 k
(1)
(2)
(3)
(n) = number of photons
NIST:
HBr
BrNIST: IE(Br) = 95 284.8cm-1
NIST:
Comments:
The threshold 83723.2 cm-1 a mentioned in slide 4 could be the major reason for The large I(Br+)/I(HBr+) ratio observed for:
1)E(v´=3), 0 = 84249.6 cm-1
see: https://notendur.hi.is/jil3/work/HBr/E%20states%20for%20HBr.pdf 2)H(v´=2), 0 = 84042.1 cm-1
see: 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 0 > 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
30 k
60 k
90 k
H + Br30300 cm-1
93736.45H + Br**(4P;5s)
Lowest energy Br**
HBr+ + e; 94205.51806 cm-1
H + Br*(1/2)33985.24 cm-1
H + Br +125584.8
139978.77 H + + Br
74000
86000
41861.643000
37000
83723.2
Total scanrange for HBr H + + Br-112849.6cm-1
130 k
(1)
(2)
(3)
(n) = number of photons
3 photons are needed toionize Br and Br* in theexcitation region
9528
4.8
9159
9.56
400
300
200
100
0
x10-1
8
20015010050
160000
140000
120000
100000
80000
60000
40000
20000
0
Ene
rgy
/cm
-1
543210Internuclear Distance / Å
HBr X1
H+Br- V1
HBr**
H1
F1
HBr+ X2
HBr+* A2
t3
a3 a3
HBr* A1
Fig. 1 forHBr-FvsV-paper:
