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1-Propene, 2-methyl-

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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: T. Shimanouchi

Symmetry:   C2nu     Symmetry Number sigma = 2


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

a1 1 CH2 s-str 2989  D 2991 M sln. 2989 S p liq.
a1 2 CH3 d-str 2941  C 2940.8 gas 2930 W p liq.
a1 3 CH3 s-str 2911  D 2919 W gas 2911 S p liq.
a1 4 C=C str 1661  C 1661.1 S gas 1655 S p liq.
a1 5 CH3 d-deform 1470  C 1469.6 S gas 1462 VW liq.
a1 6 CH2 scis 1416  D 1419 W sln. 1416 S p liq.
a1 7 CH3 s-deform 1366  D 1366 VW p liq.
a1 8 CH3 rock 1064  C 1063.9 S gas 1058 W p liq.
a1 9 C-C str 801  C 801 W gas 803 VS p liq.
a1 10 C=CC2 ip-deform 383  D 384 W sln. 383 W liq.
a2 11 CH3 d-str 2970  D  ia 2970 W p liq. OV(«nu»17)
a2 12 CH3 d-deform 1459  D  ia 1459 VW liq.
a2 13 CH3 rock 1076  E  ia CF
a2 14 CH2 twist 981  E  ia CF
a2 15 CH3 torsion 193  E  ia CF
b1 16 CH2 a-str 3086  C 3086.0 S gas 3079 W dp liq.
b1 17 CH3 d-str 2980  C 2980.4 gas 2970 W dp liq. OV(«nu»11)
b1 18 CH3 s-str 2893  C 2892.9 W gas 2892 W dp liq.
b1 19 CH3 d-deform 1458  C 1458.4 S gas
b1 20 CH3 s-deform 1381  C 1381.2 S gas 1386 W liq.
b1 21 C-C str 1282  C 1281.9 S gas 1281 W liq.
b1 22 CH3 rock 1043  E CF
b1 23 CH2 rock 974  C 973.7 W gas 972 VW liq.
b1 24 C=CC2 ip-deform 430  D 430 sh sln.
b2 25 CH3 d-str 2945  C 2944.9 S gas
b2 26 CH3 d-deform 1444  C 1443.7 S gas 1439 VW liq.
b2 27 CH3 rock 1079  C 1079.0 S gas
b2 28 CH2 wag 890  C 889.7 VS gas 883 W dp liq.
b2 29 C=CC2 op-deform 429  C 429.1 S gas 431 W dp liq.
b2 30 CH3 torsion 196  C 196 VW gas

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
iaInactive
shShoulder
pPolarized
dpDepolarized
CFCalculated frequency
OVOverlapped by band indicated in parentheses.
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