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Ethyl bromide

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Vibrational and/or electronic energy levels

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Takehiko Shimanouchi

Symmetry:   Cs     Symmetry Number sigma = 1


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

a' 1 CH3 d-str 2988  C 2988 S gas 2971 p liq. OV(«nu»13)
a' 2 CH2 s-str 2937  B 2936.5 S gas 2924 p liq.
a' 3 CH3 s-str 2880  B 2879.8 S gas
a' 4 CH2 scis 1451  D 1451 M gas 1442 dp liq. OV(«nu»5+«nu»14)
a' 5 CH3 d-deform 1451  D 1451 M gas 1442 dp liq. OV(«nu»4+«nu»14)
a' 6 CH3 s-deform 1386  B 1386 M gas
a' 7 CH2 wag 1252  E 1258 VS gas 1248 p liq. FR(«nu»9+«nu»11)
a' 7 CH2 wag 1252  E 1247 VS gas 1248 p liq. FR(«nu»9+«nu»11)
a' 8 CH3 rock 1061  D 1061 VW gas 1069 p liq.
a' 9 CC str 964  B 964 S gas 960 dp liq. OV(«nu»15)
a' 10 CBr str 583  B 583 VS gas 560 p liq.
a' 11 CCBr deform 290  B 290 S gas 292 p liq.
a 12 CH2 a-str 3018  B 3018 S gas
a 13 CH3 d-str 2988  C 2988 S gas 2971 p liq. OV(«nu»1)
a 14 CH3 d-deform 1451  D 1451 M gas 1442 dp liq. OV(«nu»4,«nu»5)
a 15 CH2 twist 1248  E CF
a 16 CH3 rock 964  D 964 S gas 960 dp liq. OV(«nu»9)
a 17 CH2 rock 770  B 770 M gas
a 18 Torsion 247  C 247 gas MW: «nu»247

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
VWVery weak
pPolarized
dpDepolarized
FRFermi resonance with an overtone or a combination tone indicated in the parentheses.
CFCalculated frequency
OVOverlapped by band indicated in parentheses.
MWTorsional Frequency calculated from microwave spectroscopic data.
B1~3 cm-1 uncertainty
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty
E15~30 cm-1 uncertainty

References

Go To: Top, Vibrational and/or electronic energy levels, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]


Notes

Go To: Top, Vibrational and/or electronic energy levels, References