Dioxosilane


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
Δfgas-73.000kcal/molReviewChase, 1998Data last reviewed in June, 1967
Quantity Value Units Method Reference Comment
gas,1 bar54.728cal/mol*KReviewChase, 1998Data last reviewed in June, 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) 4500. to 6000.
A 14.71250
B 0.106739
C -0.021574
D 0.001493
E -0.875858
F -79.69450
G 69.19149
H -73.00010
ReferenceChase, 1998
Comment Data last reviewed in June, 1967

Condensed 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
Δfliquid-215.74kcal/molReviewChase, 1998Data last reviewed in June, 1967
Quantity Value Units Method Reference Comment
liquid,1 bar11.45cal/mol*KReviewChase, 1998Data last reviewed in June, 1967

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

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Temperature (K) 1996. to 4500.
A 20.50000
B -0.000004
C 0.000001
D -9.103920×10-8
E -0.000004
F -227.7414
G 27.08987
H -215.7412
ReferenceChase, 1998
Comment Data last reviewed in June, 1967

Phase change 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.

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
2005. to 2500.7.8149320008.56858.883Stull, 1947Coefficents calculated by NIST from author's data.

IR Spectrum

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Data compiled by: Coblentz Society, Inc.


THz IR spectrum

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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: Edwin J. Heilweil and Matthew B. Campbell

Condensed Phase Spectrum

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THz spectrum
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Additional Data

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Owner Collection (C) 2005 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
State Solid (powder)
Sample description 8.9 mg + 112.7 mg polyethylene spectrograde powder
Sample contents silica, fumed

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.

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

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]


Notes

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