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Methyl zinc


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
Deltafgas190. ± 17.kJ/molReviewMartinho SimõesThe enthalpy of formation relies on 52.9 ± 1.3 kJ/mol for the enthalpy of formation of Zn(Me)2(g).
Deltafgas182. - 204.kJ/molReviewMartinho SimõesThe enthalpy of formation limits rely on 52.9 ± 1.3 kJ/mol for the enthalpy of formation of Zn(Me)2(g).
Deltafgas172.4 ± 6.5kJ/molReviewMartinho SimõesThe enthalpy of formation relies on 52.9 ± 1.3 kJ/mol for the enthalpy of formation of Zn(Me)2(g).

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

Dimethylzinc (g) = Methyl zinc (g) + Methane (g)

By formula: C2H6Zn (g) = CH3Zn (g) + CH4 (g)

Quantity Value Units Method Reference Comment
Deltar266.5 ± 6.3kJ/molKinGJackson, 1989 
Deltar276. - 298.kJ/molN/ASmith and Patrick, 1983 
Deltar285. ± 17.kJ/molN/AMcMillen and Golden, 1982 

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: Marilyn E. Jacox

State:   C


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 36510 gas C-X 260 274 Young, Gosavi, et al., 1973


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 2 CH3 deform. 950 T gas AB Young, Gosavi, et al., 1973

State:   A


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 24082.82 gas A-X 379 437 Young, Gosavi, et al., 1973
Yu, Youngs, et al., 1986
Robles, Ellis, et al., 1991
Cerny, Tan, et al., 1993
Barckholtz, Powers, et al., 1999


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 2 CH3 deform. 1060 gas AB LF Young, Gosavi, et al., 1973
Jackson, 1990
Robles, Ellis, et al., 1991
Barckholtz, Powers, et al., 1999
3 ZnC stretch 467 gas LF MPI Robles, Ellis, et al., 1991
Barckholtz, Powers, et al., 1999
e 6 HCZn deform. 749 gas MPI Barckholtz, Powers, et al., 1999

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 2 CH3 deform. 1064 gas EM LF Ibuki, Hiraya, et al., 1990
Jackson, 1990
Robles, Ellis, et al., 1991
3 ZnC stretch 445 gas LF Jackson, 1990
Robles, Ellis, et al., 1991
e 6 ZnCH deform. 315 T gas LF Robles, Ellis, et al., 1991

Additional references: Jacox, 1994, page 230; Jacox, 1998, page 267; Jacox, 2003, page 249

Notes

TTentative assignment or approximate value
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Gas phase thermochemistry data, Reaction 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]

Jackson, 1989
Jackson, R.L., Chem. Phys. Lett., 1989, 163, 315. [all data]

Smith and Patrick, 1983
Smith, G.P.; Patrick, R., Int. J. Chem. Kinet., 1983, 15, 167. [all data]

McMillen and Golden, 1982
McMillen, D.F.; Golden, D.M., Hydrocarbon bond dissociation energies, Ann. Rev. Phys. Chem., 1982, 33, 493. [all data]

Young, Gosavi, et al., 1973
Young, P.J.; Gosavi, R.K.; Connor, J.; Strausz, O.P.; Gunning, H.E., Ultraviolet absorption spectra of CdCH3, ZnCH3, and TeCH3, J. Chem. Phys., 1973, 58, 12, 5280, https://doi.org/10.1063/1.1679141 . [all data]

Yu, Youngs, et al., 1986
Yu, C.F.; Youngs, F.; Tsukiyama, K.; Bersohn, R.; Preses, J., Photodissociation dynamics of cadmium and zinc dimethyl, J. Chem. Phys., 1986, 85, 3, 1382, https://doi.org/10.1063/1.451226 . [all data]

Robles, Ellis, et al., 1991
Robles, E.S.J.; Ellis, A.M.; Miller, T.A., Laser-induced fluorescence spectra of the cold radicals, ZnCH3 and CdCH3, and their inert-gas complexes, X«58872»CdCH3 (X = He, Ne, Ar, Kr, Xe), Chem. Phys. Lett., 1991, 178, 2-3, 185, https://doi.org/10.1016/0009-2614(91)87054-F . [all data]

Cerny, Tan, et al., 1993
Cerny, T.M.; Tan, X.Q.; Williamson, J.M.; Robles, E.S.J.; Ellis, A.M.; Miller, T.A., High resolution electronic spectroscopy of ZnCH3 and CdCH3, J. Chem. Phys., 1993, 99, 12, 9376, https://doi.org/10.1063/1.465521 . [all data]

Barckholtz, Powers, et al., 1999
Barckholtz, T.A.; Powers, D.E.; Miller, T.A.; Bursten, B.E., ZEKE Spectroscopy of the Organometallic Radicals MgCH, J. Am. Chem. Soc., 1999, 121, 11, 2576, https://doi.org/10.1021/ja9832461 . [all data]

Jackson, 1990
Jackson, R.L., Spectroscopy of the CH3Zn radical. Vibrational frequencies and electronic configurations of the X, Ã, and C states, Chem. Phys. Lett., 1990, 174, 1, 53, https://doi.org/10.1016/0009-2614(90)85325-7 . [all data]

Ibuki, Hiraya, et al., 1990
Ibuki, T.; Hiraya, A.; Shobatake, K., Photoexcitation of M(CH3)2 (M=Zn, Cd, Hg) compounds in the 106--270 nm region, J. Chem. Phys., 1990, 92, 5, 2797, https://doi.org/10.1063/1.457926 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]


Notes

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