Manganese, pentacarbonylmethyl-


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
Δfgas-181. ± 1.kcal/molReviewMartinho Simões 
Δfgas-179.5 ± 0.98kcal/molReviewMartinho SimõesSelected data

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
Δfsolid-193.9 ± 0.88kcal/molReviewMartinho SimõesSelected data
Δfsolid-195. ± 1.kcal/molHAL-HFCConnor, Zafarani-Moattar, et al., 1982Value corrected based on a set of ancillary data by J.A. Martinho Simões; Please also see Brown, Connor, et al., 1974.

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
Δsub14.4 ± 0.41kcal/molHAL-HFCHieber and Braun, 1958MS

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Reference Comment
14.4293. - 403.Hieber and Wagner, 1958AC

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

Manganese, pentacarbonylmethyl- (g) = C5MnO5 (g) + Methane (g)

By formula: C6H3MnO5 (g) = C5MnO5 (g) + CH4 (g)

Quantity Value Units Method Reference Comment
Δr45.9 ± 3.6kcal/molPIMSMartinho Simões and Beauchamp, 1990The reaction enthalpy was derived from the appearance energy of Mn(CO)5(+), 224.8 ± 1.1 kcal/mol, using Mn(CO)5(Me) as the neutral precursor, together with the adiabatic ionization energy of Mn(CO)5 radical, 179. ± 3.3 kcal/mol Martinho Simões and Beauchamp, 1990

Manganese, pentacarbonylmethyl- (solution) + Carbon monoxide (solution) = Manganese, acetylpentacarbonyl-, (OC-6-21)- (solution)

By formula: C6H3MnO5 (solution) + CO (solution) = C7H3MnO6 (solution)

Quantity Value Units Method Reference Comment
Δr-13.4 ± 1.0kcal/molRSCNolan, López de la Vega, et al., 1986solvent: Tetrahydrofuran
Δr-12.6kcal/molEqSCalderazzo, 1977solvent: 2,2'-diethoxydiethyl ether

Manganese, pentacarbonylmethyl- (cr) + 1.5Bromine (g) = manganese dibromide (cr) + 5Carbon monoxide (g) + Methane, bromo- (g)

By formula: C6H3MnO5 (cr) + 1.5Br2 (g) = Br2Mn (cr) + 5CO (g) + CH3Br (g)

Quantity Value Units Method Reference Comment
Δr-50.0 ± 0.7kcal/molHAL-HFCConnor, Zafarani-Moattar, et al., 1982 

Manganese, acetylpentacarbonyl-, (OC-6-21)- (cr) = Manganese, pentacarbonylmethyl- (g) + Carbon monoxide (g)

By formula: C7H3MnO6 (cr) = C6H3MnO5 (g) + CO (g)

Quantity Value Units Method Reference Comment
Δr28.5 ± 0.2kcal/molTD-HFCConnor, Zafarani-Moattar, et al., 1982 

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)182.7kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity175.8kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.4PELichtenberger and Fenski, 1974LLK
8.65PELichtenberger and Fenski, 1974Vertical value; LLK
8.46PEEvans, Green, et al., 1969Vertical value; RDSH

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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Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Chemical Concepts
NIST MS number 195296

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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), 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]

Connor, Zafarani-Moattar, et al., 1982
Connor, J.A.; Zafarani-Moattar, M.T.; Bickerton, J.; El-Saied, N.I.; Suradi, S.; Carson, R.; Al Takkhin, G.; Skinner, H.A., Organomet., 1982, 1, 1166. [all data]

Brown, Connor, et al., 1974
Brown, D.L.S.; Connor, J.A.; Skinner, H.A., J. Organometal. Chem., 1974, 81, 403. [all data]

Hieber and Braun, 1958
Hieber, W.; Braun, G., Justus Liebigs Ann. Chem., 1958, 24, 618. [all data]

Hieber and Wagner, 1958
Hieber, Walter; Wagner, Gerhard, Über Organomanganpentacarbonyle, I, Justus Liebigs Ann. Chem., 1958, 618, 1, 24-30, https://doi.org/10.1002/jlac.19586180104 . [all data]

Martinho Simões and Beauchamp, 1990
Martinho Simões, J.A.; Beauchamp, J.L., Chem. Rev., 1990, 90, 629. [all data]

Nolan, López de la Vega, et al., 1986
Nolan, S.P.; López de la Vega, R.; Hoff, C.D., J. Am. Chem. Soc., 1986, 108, 7852. [all data]

Calderazzo, 1977
Calderazzo, F., Angew. Chem. Int. Ed. Engl., 1977, 16, 299. [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]

Lichtenberger and Fenski, 1974
Lichtenberger, D.I.; Fenski, R.F., Assignment of the photoelectron spectra of Mn(CO)5CH3 and Mn(CO)5CF3, Inorg. Chem., 1974, 13, 486. [all data]

Evans, Green, et al., 1969
Evans, S.; Green, J.C.; Green, M.L.H.; Orchard, A.F.; Turner, D.W., Study of the bonding in pentacarbonylmanganese derivatives by photoelectron spectroscopy, Faraday Discuss. Chem. Soc., 1969, 47, 112. [all data]


Notes

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