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Disilicon mononitride


Gas phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafgas95.000kcal/molReviewChase, 1998Data last reviewed in March, 1967
Quantity Value Units Method Reference Comment
gas,1 bar61.300cal/mol*KReviewChase, 1998Data last reviewed in March, 1967

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1000.1000. - 6000.
A 9.68685014.85280
B 13.005500.050863
C -12.52040-0.023574
D 4.3232800.003977
E -0.057346-0.451790
F 91.4435089.27440
G 69.3420977.29051
H 95.0001095.00010
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1967 Data last reviewed in March, 1967

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:   2Su+


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 34314.29 gas 2Su+-X 275 315 Brugh and Morse, 1997

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Sigmau+ 3 Asym. stretch 904.0 Ar IR Meloni, Nunziante Cesaro, et al., 2001
3 Asym. stretch 910.0 N2 IR Meloni, Nunziante Cesaro, et al., 2001

Additional references: Jacox, 1998, page 174; Jacox, 2003, page 101

Notes

oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Gas phase thermochemistry data, 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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Brugh and Morse, 1997
Brugh, D.J.; Morse, M.D., Resonant two-photon ionization spectroscopy of the 13-electron triatomic Si2N, Chem. Phys. Lett., 1997, 267, 3-4, 370, https://doi.org/10.1016/S0009-2614(97)00108-5 . [all data]

Meloni, Nunziante Cesaro, et al., 2001
Meloni, G.; Nunziante Cesaro, S.; Sanna, N., FTIR matrix isolation and ab initio investigations of the Si2N and BNSi molecules, Chem. Phys. Lett., 2001, 343, 1-2, 113, https://doi.org/10.1016/S0009-2614(01)00663-7 . [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]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]


Notes

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