cyc-C4H4SiH2

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 = 36000 Ar Khabashesku, Balaji, et al., 1994

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1 SiH2 s-stretch 2144 m Ar IR Khabashesku, Balaji, et al., 1994
C=C s-stretch 1478 w Ar IR Khabashesku, Balaji, et al., 1994
CH deform. 1346 m Ar IR Khabashesku, Balaji, et al., 1994
CH deform. 1088 w Ar IR Khabashesku, Balaji, et al., 1994
SiH2 scissors 955 s Ar IR Khabashesku, Balaji, et al., 1994
Ring deform. 490 m Ar IR Khabashesku, Balaji, et al., 1994
b1 OPLA CH bend 713 vs Ar IR Khabashesku, Balaji, et al., 1994
b2 CH stretch 3038 w Ar IR Khabashesku, Balaji, et al., 1994
CH stretch 3001 w Ar IR Khabashesku, Balaji, et al., 1994
SiH2 a-stretch 2174 s Ar IR Khabashesku, Balaji, et al., 1994
C=C a-stretch 1608 m Ar IR Khabashesku, Balaji, et al., 1994
CH deform. 1285 w Ar IR Khabashesku, Balaji, et al., 1994
SiH2 wag 880 vs Ar IR Khabashesku, Balaji, et al., 1994
SiC2 a-stretch 677 w Ar IR Khabashesku, Balaji, et al., 1994

Additional references: Jacox, 1998, page 358

Notes

wWeak
mMedium
sStrong
vsVery strong
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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