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Cyclobutane-d8


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:   D2d     Symmetry Number sigma = 4


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

a1 1 CD2 s-str 2124  E  ia CF
a1 2 CD2 scis 1160  C  ia 1160 p liq.
a1 3 Ring str 882  C  ia 882 p liq.
a1 4 CD2 a-str 2224  E  ia CF
a1 5 CD2 rock 632  E  ia CF
a1 6 Ring puck 158  D  ia RP
a2 7 CD2 wag 1010  E  ia  ia CF
a2 8 CD2 twist 889  E  ia  ia CF
b1 9 CD2 wag 1078  C  ia 1078 dp liq.
b1 10 Ring deform 746  C  ia 746 dp liq.
b1 11 CD2 twist 864  E  ia CF
b2 12 CD2 s-str 2115  E CF
b2 13 CD2 scis 1040  D 1040 dp liq.
b2 14 Ring deform 938  D 938 dp liq. SF(«nu»18)
b2 15 CD2 a-str 2242  C 2242 S gas
b2 16 CD rock 483  C 483 S gas
e 17 CD2 a-str 2230  C 2230 dp liq.
e 18 CD2 twist 938  D 938 dp liq. SF(«nu»14)
e 19 CD2 rock 556  C 556 W gas
e 20 CD2 s-str 2103  E CF
e 21 CD2 scis 1078  C 1078 S gas
e 22 CD2 wag 1048  C 1048 S gas
e 23 Ring deform 734  C 734 S gas

Source: Shimanouchi, 1972

Notes

SStrong
WWeak
iaInactive
pPolarized
dpDepolarized
CFCalculated frequency
SFCalculation shows that the frequency approximately equals that of the vibration indicated in the parentheses.
RPFrequency determined by the Ritz principle.
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