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Thiophene

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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:   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 CH str 3126  C 3126 M gas 3107 p liq.
a1 2 CH str 3098  C 3098 S gas 3084 liq.
a1 3 ip-Ring II 1409  C 1409 S gas 1407 p liq.
a1 4 ip-Ring III 1360  C 1360 VW gas 1358 p liq.
a1 5 CH ip-bend 1083  C 1083 S gas 1081 p liq.
a1 6 CH ip-bend 1036  C 1036 S gas 1035 liq.
a1 7 ip-Ring IV 839  C 839 VS gas 832 p liq.
a1 8 ip-Ring VII 608  C 608 W gas 606 p liq.
a2 9 CH op-bend 903  D 900 ia VW sln. 903 dp liq.
a2 10 CH op-bend 688  D  ia 688 dp liq.
a2 11 op-Ring I 567  D 565 ia VW liq. 567 dp liq.
b1 12 CH str 3125  E Frequencies were estimated from isotopic rule
b1 13 CH str 3086  C 3086 S gas 3076 sh liq.
b1 14 ip-Ring I 1504  D 1504 VW liq. 1502 dp liq.
b1 15 CH ip-bend 1256  C 1256 S gas 1257 liq.
b1 16 CH ip-bend 1085  E OV(«nu»5). Frequencies were estimated from isotopic rule
b1 17 ip-Ring V 872  C 872 M gas 869 dp liq.
b1 18 ip-Ring VI 751  D 763 VW gas 751 dp liq.
b2 19 CH op-bend 867  E OC(«nu»9+«nu»19, 2«nu»19)
b2 20 CH op-bend 712  C 712 VS gas
b2 21 op-Ring II 452  C 452 W gas 453 dp liq.

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
iaInactive
shShoulder
pPolarized
dpDepolarized
OCFrequency estimated from an overtone or a combination tone indicated in the parentheses.
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