cyc-C4H6Si:

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: Marilyn E. Jacox

State:   ?
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 40000 Ar Khabashesku, Balaji, et al., 1994

State:   ?
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 20800 Ar Khabashesku, Balaji, et al., 1994

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1 =CH stretch 3028 w Ar IR Khabashesku, Balaji, et al., 1994
CH2 stretch 2876 w Ar IR Khabashesku, Balaji, et al., 1994
C=C stretch 1624 s Ar IR Khabashesku, Balaji, et al., 1994
CH2 scissors 1406 m Ar IR Khabashesku, Balaji, et al., 1994
=CH s-rock 1208 w Ar IR Khabashesku, Balaji, et al., 1994
CH2 rock 1108 s Ar IR Khabashesku, Balaji, et al., 1994
Ring deform. 881 m Ar IR Khabashesku, Balaji, et al., 1994
SiC2 s-stretch 616 m Ar IR Khabashesku, Balaji, et al., 1994
Ring deform. 463 w Ar IR Khabashesku, Balaji, et al., 1994
b1 CH2 stretch 2962 w Ar IR Khabashesku, Balaji, et al., 1994
=CH wag 770 m Ar IR Khabashesku, Balaji, et al., 1994
b2 =CH stretch 3002 w Ar IR Khabashesku, Balaji, et al., 1994
CH2 stretch 2854 w Ar IR Khabashesku, Balaji, et al., 1994
=CH a-rock 1397 s Ar IR Khabashesku, Balaji, et al., 1994
CH2 wag 1307 w Ar IR Khabashesku, Balaji, et al., 1994
CH2 twist 1174 w Ar IR Khabashesku, Balaji, et al., 1994
Ring deform. 944 w Ar IR Khabashesku, Balaji, et al., 1994
SiC2 a-stretch 741 s Ar IR Khabashesku, Balaji, et al., 1994
Ring deform. 528 w Ar IR Khabashesku, Balaji, et al., 1994

Additional references: Jacox, 1998, page 358

Notes

wWeak
mMedium
sStrong
xEnergy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.

References

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

Khabashesku, Balaji, et al., 1994
Khabashesku, V.N.; Balaji, V.; Boganov, S.E.; Nefedov, O.M.; Michl, J., Matrix isolation of silacyclopentadienes: UV-visible and IR spectra and photochemical interconversion, J. Am. Chem. Soc., 1994, 116, 1, 7863, https://doi.org/10.1021/ja00080a037 . [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Notes

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