Dimethylzinc

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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 as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid25.0 ± 5.9kJ/molReviewMartinho SimõesMS
Δfliquid22.5 ± 1.3kJ/molReviewMartinho SimõesMS
Quantity Value Units Method Reference Comment
Δcliquid-2020.0 ± 5.9kJ/molCC-SBLong and Norrish, 1949Please also see Cox and Pilcher, 1970.; MS
Quantity Value Units Method Reference Comment
liquid201.6J/mol*KN/ASheiman, Nistratov, et al., 1984DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
129.2298.15Sheiman, Nistratov, et al., 1984T = 5 to 300 K.; DH

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 2900  C  ia 2900 S p liq. Free rotation
a1' 2 CH3 s-deform 1157  C  ia 1157 S p liq. Free rotation
a1' 3 CZn s-str 503  C  ia 503 VS p liq. Free rotation
a1 4 Torsion  ia  ia Free rotation
a2 5 CH3 s-str 2915  C 2915 S gas  ia Free rotation
a2 6 CH3 s-deform 1183  C 1183 M gas  ia Free rotation
a2 7 CZn a-str 613  C 613 gas  ia Free rotation
e' 8 CH3 d-str 2966  C 2966 S gas 2947 liq. Free rotation
e' 9 CH3 d-deform 1304  C 1301 M gas 1302 W liq. Free rotation
e' 10 CH3 rock 704  C 704 S gas Free rotation
e' 11 CZnC deform 134  D 134 sh liq. Free rotation
e 12 CH3 d-str 2843  C 2843 gas 2830 liq. Free rotation
e 13 CH3 d-deform 1434  C 1434 W liq. Free rotation
e 14 CH3 rock 620  C 620 M liq. Free rotation

Source: Shimanouchi, 1972

Notes

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

References

Go To: Top, 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.

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

Long and Norrish, 1949
Long, L.H.; Norrish, R.G.W., Phil. Trans. Roy. Soc. (London), 1949, A241, 587. [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]

Sheiman, Nistratov, et al., 1984
Sheiman, M.S.; Nistratov, V.P.; Kamelova, G.P.; Rabinovich, I.B., Low-temperature heat capacity of organic compounds of aluminum and zinc, Probl. Kalorim. Khim. Termodin., Dokl. Vses. Konf., 10th, 1984, 2, 457-459. [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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