silicon tetraiodide


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References, Notes

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
Δfgas-110.46kJ/molReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
gas,1 bar416.43J/mol*KReviewChase, 1998Data last reviewed in June, 1976

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 700. - 6000.
A 107.5727
B 0.440291
C -0.119460
D 0.010203
E -0.640830
F -144.6986
G 542.8782
H -110.4580
ReferenceChase, 1998
Comment Data last reviewed in June, 1976

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References, Notes

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
Δfliquid-174.60kJ/molReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
liquid,1 bar294.31J/mol*KReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
Δfsolid-189.54kJ/molReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
solid258.15J/mol*KReviewChase, 1998Data last reviewed in June, 1976

Liquid 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 393.65 - 700.
A 147.9048
B 39.54482
C 2.663092
D -1.401654
E -0.008482
F -220.5068
G 461.3571
H -174.6033
ReferenceChase, 1998
Comment Data last reviewed in June, 1976

Solid 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 393.65
A 62.48971
B 198.9726
C -234.1341
D 170.8235
E 0.222856
F -214.5308
G 284.6045
H -189.5352
ReferenceChase, 1998
Comment Data last reviewed in June, 1976

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References, Notes

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:   Td     Symmetry Number σ = 12


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

a1 1 Sym str 168  C  ia 168 S p liq.
e 2 Deg deform 63  C  ia 63 M dp liq.
f2 3 Deg str 405  C 405 W dp liq.
f2 4 Deg deform 94  C 94 S dp liq.

Source: Shimanouchi, 1972

Notes

SStrong
MMedium
WWeak
iaInactive
pPolarized
dpDepolarized
C3~6 cm-1 uncertainty

References

Go To: Top, Gas phase thermochemistry data, Condensed 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]

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, Gas phase thermochemistry data, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References