Mercury, dimethyl-


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
Δvap8.3 ± 0.2kcal/molCC-SBLong and Cattanach, 1961MS
Quantity Value Units Method Reference Comment
Δsub8.3 ± 0.2kcal/molCC-SBLong and Cattanach, 1961MS

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Reference Comment
8.77 ± 0.02321.Baev, 2001Based on data from 275. to 367. K.; AC

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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

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

Quantity Value Units Method Reference Comment
Proton affinity (review)184.4kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity177.1kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.10 ± 0.05PIDistefano and Dibeler, 1970RDSH
9.3PECreber and Bancroft, 1980Vertical value; LLK
9.33PENugent, Wu, et al., 1976Vertical value; LLK
9.33PEFehlner, Ulman, et al., 1976Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3+12.55CH3+Hg?PIDistefano and Dibeler, 1970RDSH
CH3Hg+10.10 ± 0.02CH3PIDistefano and Dibeler, 1970RDSH
Hg+13.05 ± 0.022CH3PIDistefano and Dibeler, 1970RDSH

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:   D3h'(G+36)     Symmetry Number σ = 6


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

a1' 1 CH3 s-str 2911  C  ia 2911 VS p liq. Free rotation
a1' 2 CH3 s-deform 1182  C  ia 1182 VS p liq. Free rotation
a1' 3 CHg s-str 515  C  ia 515 VS p liq. Free rotation
a1 4 Torsion  ia  ia Free rotation
a2 5 CH3 s-str 2925  D 2925 b gas  ia Free rotation
a2 6 CH3 s-deform 1191  C 1191 M gas  ia Free rotation
a2 7 CHg a-str 540  C 540 VS gas  ia Free rotation
e' 8 CH3 d-str 2962  C 2962 S gas Free rotation
e' 9 CH3 d-deform 1397  C 1397 W dp liq. Free rotation
e' 10 CH3 rock 780  C 780 VS gas 779 VW dp liq. Free rotation
e' 11 CHgC deform 161  C 161 M dp liq. Free rotation
e 12 CH3 d-str 2874  C 2874 S p liq. Free rotation
e 13 CH3 d-deform 1442  C 1442 W dp liq. Free rotation
e 14 CH3 rock 699  C 700 sh gas 699 M dp liq. Free rotation

Source: Shimanouchi, 1972

Notes

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

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.

Long and Cattanach, 1961
Long, L.H.; Cattanach, J., J. Inorg. Nucl. Chem., 1961, 20, 340. [all data]

Baev, 2001
Baev, A.K., Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 2001, 44, 1, 3. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Distefano and Dibeler, 1970
Distefano, G.; Dibeler, V.H., Photoionization study of the dimethyl compounds of zinc, cadmium, and mercury, Intern. J. Mass Spectrom. Ion Phys., 1970, 4, 59. [all data]

Creber and Bancroft, 1980
Creber, D.K.; Bancroft, G.M., Photoelectron studies of dialkyl group 2B compounds: Ligand field splittings intensity variations with photon energy, Inorg. Chem., 1980, 19, 643. [all data]

Nugent, Wu, et al., 1976
Nugent, W.A.; Wu, M.M.-H.; Fehlner, T.P.; Kochi, J.K., Enhanced reactivity of exo-norbornyl derivatives. Evidence for σ-participation in the absence of steric effects, J. Chem. Soc., Chem. Commun., 1976, 456. [all data]

Fehlner, Ulman, et al., 1976
Fehlner, T.P.; Ulman, J.; Nugent, W.A.; Kochi, J.K., Effect of alkyl substituents on the first ionization potential and on 5d10 ionization in dialkylmercury compounds, Inorg. Chem., 1976, 15, 2544. [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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