Methane, dibromodifluoro-

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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.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil297.6KN/APCR Inc., 1990BS
Quantity Value Units Method Reference Comment
Tfus131.61KN/AMcDonald, Shrader, et al., 1959Crystal phase 1 phase; Uncertainty assigned by TRC = 0.05 K; TRC
Tfus126.69KN/AMcDonald, Shrader, et al., 1959Metastable crystal phase; Uncertainty assigned by TRC = 0.05 K; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
6.24282.AStephenson and Malanowski, 1987Based on data from 247. - 297. K. See also McDonald, Shrader, et al., 1959, 2 and Kudchadker, Kudchadker, et al., 1979.; AC
4.45203.N/ABanks, Emel«65533»us, et al., 1948Based on data from 156. - 218. K.; AC

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
184.46 - 295.944.278901185.48-18.886McDonald, Shrader, et al., 1959, 2

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Mass spectrum (electron ionization)

Go To: Top, Phase change 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.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
NIST MS number 9611

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Vibrational and/or electronic energy levels

Go To: Top, Phase change data, Mass spectrum (electron ionization), 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:   C     Symmetry Number σ = 2


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

a1 1 CF2 s-str 1090  C 1090 gas 1077 W p liq.
a1 2 CF2 scis 623  C 623 gas 624 W p liq.
a1 3 CBr2 s-str 140  D 340 S p liq.
a1 4 CBr2 scis 168  D 168 M p liq.
a2 5 CF2 twist 281  D  ia 281 W dp liq.
b1 6 CF2 a-str 1153  C 1153 VS gas 1141 VW dp liq.
b1 7 CF2 rock 369  D 369 VW dp liq.
b2 8 CBr2 a-str 831  C 831 VS gas 816 W dp liq.
b2 9 CF2 wag 325  D 325 VW dp liq.

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
iaInactive
pPolarized
dpDepolarized
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty

References

Go To: Top, Phase change data, Mass spectrum (electron ionization), 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.

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]

McDonald, Shrader, et al., 1959
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of 30 Organics, J. Chem. Eng. Data, 1959, 4, 311. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

McDonald, Shrader, et al., 1959, 2
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of Thirty Pure Organic Compounds., J. Chem. Eng. Data, 1959, 4, 4, 311-313, https://doi.org/10.1021/je60004a009 . [all data]

Kudchadker, Kudchadker, et al., 1979
Kudchadker, A.P.; Kudchadker, S.A.; Shukla, R.P.; Patnaik, P.R., Vapor pressures and boiling points of selected halomethanes, J. Phys. Chem. Ref. Data, 1979, 8, 2, 499, https://doi.org/10.1063/1.555600 . [all data]

Banks, Emel«65533»us, et al., 1948
Banks, A.A.; Emel«65533»us, H.J.; Haszeldine, R.N.; Kerrigan, V., 443. The reaction of bromine trifluoride and iodine pentafluoride with carbon tetrachloride, tetrabromide, and tetraiodide and with tetraiodoethylene, J. Chem. Soc., 1948, 2188, https://doi.org/10.1039/jr9480002188 . [all data]

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume II, J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]


Notes

Go To: Top, Phase change data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References