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Methylmercuric iodide


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.

Data compiled by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Deltafgas21.6 ± 2.5kJ/molReviewMartinho SimõesThe enthalpy of formation relies on 57.8 ± 3.0 kJ/mol for the enthalpy of formation of Hg(Me)2(l).

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.

Data compiled by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Deltafsolid-43.7 ± 1.9kJ/molReviewMartinho SimõesThe enthalpy of formation relies on 57.8 ± 3.0 kJ/mol for the enthalpy of formation of Hg(Me)2(l).

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:
MS - José A. Martinho Simões
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Deltasub65.3 ± 1.7kJ/molRSCCharnley and Skinner, 1951MS

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
65.3 ± 1.6276.VCharnley and Skinner, 1951, 2Based on data from 263. - 290. K.; AC

Reaction 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.

Data compiled by: José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Mercury, dimethyl- (l) + Mercury diiodide (cr) = 2Methylmercuric iodide (cr)

By formula: C2H6Hg (l) + HgI2 (cr) = 2CH3HgI (cr)

Quantity Value Units Method Reference Comment
Deltar-39.8 ± 1.6kJ/molRSCHartley, Pritchard, et al., 1950Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

Gas phase ion energetics 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
9.4 ± 0.2EIGlockling, Irwin, et al., 1976LLK
9.25PEEland, 1970Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
HgI+12.2 ± 0.2CH3EIGlockling, Irwin, et al., 1976LLK

Mass spectrum (electron ionization)

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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: 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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Owner NIST Mass Spectrometry Data Center
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 15791

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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: Takehiko Shimanouchi

Symmetry:   C3nu     Symmetry Number sigma = 3


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

a1 1 CH3 s-str 2920  D 2920 M sln. 2914 sln.
a1 2 CH3 s-deform 1180  D 1180 M sln. 1182 p solid solid
a1 3 CHg str 531  D 531 M sln. 538 p solid solid
a1 4 HgI str 184  D 184 M sln. 180 p solid solid
e 5 CH3 d-str 3008  D 3008 M sln.
e 6 CH3 d-deform 1400  D 1400 W sln.
e 7 CH3 rock 781  D 781 S sln.
e 8 CHgI bend 64  D 64 M sln.

Source: Shimanouchi, 1972

Notes

SStrong
MMedium
WWeak
pPolarized
D6~15 cm-1 uncertainty

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics 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.

Martinho Simões
Martinho Simões, J.A., Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]

Charnley and Skinner, 1951
Charnley, T.; Skinner, H.A., J. Chem. Soc., 1951, 1921.. [all data]

Charnley and Skinner, 1951, 2
Charnley, T.; Skinner, H.A., 424. Measurements of the vapour pressures of some alkylmercury halides. The latent heats of sublimation of methyl- and ethyl- mercury halides, J. Chem. Soc., 1951, 1921, https://doi.org/10.1039/jr9510001921 . [all data]

Hartley, Pritchard, et al., 1950
Hartley, K.; Pritchard, H.O.; Skinner, H.A., Thermochemistry of metallic alkyls. III.?mercury dimethyl and mercury methyl halides, Trans. Faraday Soc., 1950, 46, 1019, https://doi.org/10.1039/tf9504601019 . [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds in Academic Press, New York, 1970. [all data]

Glockling, Irwin, et al., 1976
Glockling, F.; Irwin, J.G.; Morrison, R.J.; Sweeney, J.J., A mass spectroscopic study of organomercurials and mercuric halides, Inorg. Chim. Acta, 1976, 19, 267. [all data]

Eland, 1970
Eland, J.H.D., Photoelectron spectra and chemical bonding of mercury(II) compounds, Intern. J. Mass Spectrom. Ion Phys., 1970, 4, 37. [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

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