Dimanganese decacarbonyl

Formula: C₁₀Mn₂O₁₀
Molecular weight: 389.9771
IUPAC Standard InChI: InChI=1S/10CO.2Mn/c10*1-2;;
IUPAC Standard InChIKey: QFEOTYVTTQCYAZ-UHFFFAOYSA-N
CAS Registry Number: 10170-69-1
Chemical structure:
This structure is also available as a 2d Mol file
Other names: Mn2(CO)10; Manganese carbonyl; Manganese, decacarbonyldi-,; Decacarbonyldimanganese; Manganese carbonyl (Mn2(CO)10); Manganese, decacarbonyldi-, (Mn-Mn)
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- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Reaction thermochemistry data

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Data compiled by: José A. Martinho Simões

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Individual Reactions

Dimanganese decacarbonyl (solution) = 2C₅MnO₅ (solution)

By formula: C₁₀Mn₂O₁₀ (solution) = 2C₅MnO₅ (solution)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	37.7 ± 4.1	kcal/mol	ES/EChem	Pugh and Meyer T.J., 1992	solvent: Acetonitrile; The value relies on the reaction Gibbs energy, 28.1 ± 4.0 kcal/mol Pugh and Meyer T.J., 1992, and an estimated value, 133.9 J/(mol K), for the reaction entropy Pugh and Meyer T.J., 1992
Δ_rH°	>24.90	kcal/mol	ES/EChem	Pugh and Meyer, 1988	solvent: Acetonitrile; The lower limit is the reaction Gibbs energy
Δ_rH°	38.0 ± 5.0	kcal/mol	PAC	Goodman, Peters, et al., 1986	solvent: Hexane, cyclohexane, thf or acetonitrile; The average value of the enthalpy of the reaction Mn2(CO)10(solution) = 2xMn(CO)5(solution) + (1-x)Mn2(CO)9(solution) + (1-x)CO(solution) in the solvents indicated is 12.8 ± 1.2 kcal/mol. This value, together with several estimates and auxiliary data led to the reaction enthalpy for the cleavage of Mn-Mn bond
Δ_rH°	>36.8	kcal/mol	KinS	Hopgood and Poë, 1966	solvent: Decalin; Please also see Poë, 1981. The reaction enthalpy was derived from the enthalpy of activation, 36.76 ± 0.38 kcal/mol Hopgood and Poë, 1966 Poë, 1981, by assuming a negligible barrier for the radical recombination. This procedure was later considered to yield a low limit of the reaction enthalpy Poë, 1983 Marcomini and Poë, 1984 Marcomini and Poë, 1983 Coville, Stolzenberg, et al., 1983. See also Schmidt, Trogler, et al., 1984

Dimanganese decacarbonyl (solution) + (solution) = 2C₁₀MnO₁₀Re (solution)

By formula: C₁₀Mn₂O₁₀ (solution) + C₁₀O₁₀Re₂ (solution) = 2C₁₀MnO₁₀Re (solution)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28.9 ± 7.4	kcal/mol	PC	Harel and Adamson, 1986	solvent: Cyclohexane; The reaction enthalpy was calculated from the enthalpies of the following reactions: Mn2(CO)10(solution) + I2(solution) = 2Mn(CO)5(I)(solution), -44.9 ± 2.0 kcal/mol, Re2(CO)10(solution) + I2(solution) = 2Re(CO)5(I)(solution), -37.6 ± 3.8 kcal/mol, and MnRe(CO)10(solution) + I2(solution) = Mn(CO)5(I)(solution) + Re(CO)5(I)(solution), -55.7 ± 3.0 kcal/mol
Δ_rH°	8.22 ± 0.31	kcal/mol	EqS	Marcomini and Poë, 1984	solvent: Decalin; Temperature range: 443-463 K

Dimanganese decacarbonyl (cr) + (cr) = 2 (cr)

By formula: C₁₀Mn₂O₁₀ (cr) + I₂ (cr) = 2C₅IMnO₅ (cr)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-44.2 ± 2.1	kcal/mol	PC	Harel and Adamson, 1986	The reaction enthalpy was calculated from the enthalpy of the same reaction in cyclohexane, -44.9 ± 2.0 kcal/mol Harel and Adamson, 1986, and from the solution enthalpies of Mn2(CO)10(cr), 8.60 ± 0.50 kcal/mol, I2(cr), 4.90 ± 0.1 kcal/mol, and Mn(CO)5(I)(cr), 6.4 ± 0.1 kcal/mol Harel and Adamson, 1986. The latter value refers to the solution in benzene and is therefore taken as an approximation

Dimanganese decacarbonyl (g) = 2C₅MnO₅ (g)

By formula: C₁₀Mn₂O₁₀ (g) = 2C₅MnO₅ (g)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	>42.1	kcal/mol	EST	Smith, 1988
Δ_rH°	22.	kcal/mol	EST	Connor, Zafarani-Moattar, et al., 1982
Δ_rH°	23. ± 3.1	kcal/mol	EG/EIMS	Bidinosti and McIntyre, 1970	The reaction enthalpy includes an estimated correction to 298 K. A value of 24.9 ± 2.0 kcal/mol was reported at an average temperature of 540 K Bidinosti and McIntyre, 1970. The enthalpy of formation relies on -378.9 ± 1.0 kcal/mol for the enthalpy of formation of Mn2(CO)10(g)

Dimanganese decacarbonyl (solution) + (solution) = 2 (solution)

By formula: C₁₀Mn₂O₁₀ (solution) + H₂ (solution) = 2C₅HMnO₅ (solution)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.70 ± 0.31	kcal/mol	EqS	Klingler R.J. and Rathke, 1992	solvent: Supercritical carbon dioxide; Temperature range: 373-463 K

Dimanganese decacarbonyl (solution) + (solution) = 2C₉CoMnO₉ (solution)

By formula: C₁₀Mn₂O₁₀ (solution) + C₈Co₂O₈ (solution) = 2C₉CoMnO₉ (solution)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	0.79 ± 0.31	kcal/mol	EqS	Klingler R.J. and Rathke, 1992	solvent: Supercritical carbon dioxide; Temperature range: 353-453 K

Dimanganese decacarbonyl (g) = C₉Mn₂O₉ (g) + (g)

By formula: C₁₀Mn₂O₁₀ (g) = C₉Mn₂O₉ (g) + CO (g)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.0 ± 2.0	kcal/mol	LPHP	Smith, 1988	The reaction enthalpy relies on an activation energy of 38.0 ± 2.0 kcal/mol and assumes a negligible activation barrier for product recombination.

Dimanganese decacarbonyl (solution) + (solution) = 2 (solution)

By formula: C₁₀Mn₂O₁₀ (solution) + I₂ (solution) = 2C₅IMnO₅ (solution)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-44.9 ± 2.0	kcal/mol	PC	Harel and Adamson, 1986	solvent: Cyclohexane

Dimanganese decacarbonyl (cr) + 2 (g) = 2 (cr) + 10 (g)

By formula: C₁₀Mn₂O₁₀ (cr) + 2Br₂ (g) = 2Br₂Mn (cr) + 10CO (g)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-63.0 ± 2.0	kcal/mol	HAL-HFC	Connor, Zafarani-Moattar, et al., 1982

Gas phase ion energetics data

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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
8.32 ± 0.01	EI	Michels and Svec, 1981	LLK
7.7	PE	Higginson, Lloyd, et al., 1975	LLK
7.69 ± 0.01	PE	Connor, Zafarani-Moattar, et al., 1972	LLK
8.46 ± 0.03	EI	Junk and Svec, 1970	RDSH
8.4 ± 0.1	EI	Bidinosti and McIntyre, 1970	RDSH
8.55 ± 0.10	EI	Winters and Kiser, 1965	RDSH
8.02	PE	Higginson, Lloyd, et al., 1975	Vertical value; LLK
8.02	PE	Evans, Green, et al., 1969	Vertical value; RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
MnCO⁺	18.21	?	EI	Svec and Junk, 1967	RDSH
MnCO⁺	17.5 ± 0.2	?	EI	Winters and Kiser, 1965	RDSH
MnC₂O₂⁺	14.80	?	EI	Svec and Junk, 1967	RDSH
Mn₂C₂O₂⁺	16.43	8CO	EI	Svec and Junk, 1967	RDSH
Mn₂C₃O₃⁺	15.34	7CO	EI	Svec and Junk, 1967	RDSH
Mn₂C₄O₄⁺	13.98	6CO	EI	Svec and Junk, 1967	RDSH
Mn₂C₄O₄⁺	14.0 ± 0.2	6CO	EI	Winters and Kiser, 1965	RDSH
MnC₅O₅⁺	9.40	?	EI	Svec and Junk, 1967	RDSH
MnC₅O₅⁺	9.3 ± 0.1	?	EI	Bidinosti and McIntyre, 1966	RDSH
Mn₂C₅O₅⁺	11.91	5CO	EI	Svec and Junk, 1967	RDSH
Mn₂C₅O₅⁺	12.6 ± 0.2	5CO	EI	Winters and Kiser, 1965	RDSH
Mn⁺	22.13	?	EI	Svec and Junk, 1967	RDSH
Mn⁺	20.8 ± 0.4	?	EI	Winters and Kiser, 1965	RDSH
Mn₂⁺	18.73	10CO	EI	Svec and Junk, 1967	RDSH
Mn₂⁺	18.8 ± 0.3	10CO	EI	Winters and Kiser, 1965	RDSH

References

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Pugh and Meyer T.J., 1992
Pugh, J.R.; Meyer T.J., J. Am. Chem. Soc., 1992, 114, 3784. [all data]

Pugh and Meyer, 1988
Pugh, J.R.; Meyer, T.J., J. Am. Chem. Soc., 1988, 110, 8245. [all data]

Goodman, Peters, et al., 1986
Goodman, J.L.; Peters, K.S.; Vaida, V., Organometallics, 1986, 5, 815. [all data]

Hopgood and Poë, 1966
Hopgood, D.; Poë, A.J., J. Chem. Soc., Chem. Commun., 1966, 831.. [all data]

Poë, 1981
Poë, A., ACS Symp. Ser., 1981, No. 155, 135. [all data]

Poë, 1983
Poë, A., Chem. Brit., 1983, 19, 997. [all data]

Marcomini and Poë, 1984
Marcomini, A.; Poë, A., J. Chem. Soc., Dalton Trans., 1984, 95.. [all data]

Marcomini and Poë, 1983
Marcomini, A.; Poë, A., J. Am. Chem. Soc., 1983, 105, 6952. [all data]

Coville, Stolzenberg, et al., 1983
Coville, N.J.; Stolzenberg, A.M.; Muetterties, E.L., J. Am. Chem. Soc., 1983, 105, 2499. [all data]

Schmidt, Trogler, et al., 1984
Schmidt, S.P.; Trogler, W.C.; Basolo, F., J. Am. Chem. Soc., 1984, 106, 1308. [all data]

Harel and Adamson, 1986
Harel, Y.; Adamson, A.W., J. Phys. Chem., 1986, 90, 6693. [all data]

Smith, 1988
Smith, G.P., Polyhedron, 1988, 7, 1605. [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]

Bidinosti and McIntyre, 1970
Bidinosti, D.R.; McIntyre, N.S., Mass spectrometric study of the thermal decomposition of dimanganese decacarbonyl and dicobalt octacarbonyl, Can. J. Chem., 1970, 48, 593. [all data]

Klingler R.J. and Rathke, 1992
Klingler R.J.; Rathke, J.W., Inorg. Chem., 1992, 31, 804. [all data]

Michels and Svec, 1981
Michels, G.D.; Svec, H.J., Characterization of MnTc(CO)₁₀ and TcRe(CO)₁₀, Inorg. Chem., 1981, 20, 3445. [all data]

Higginson, Lloyd, et al., 1975
Higginson, B.R.; Lloyd, D.R.; Evans, S.; Orchard, A.F., Photoelectron studies of metal carbonyls. Part 5. - Substituted group VIIA carbonyls, J. Chem. Soc. Faraday Trans. 2, 1975, 71, 1913. [all data]

Connor, Zafarani-Moattar, et al., 1972
Connor, J.A.; Zafarani-Moattar, M.T.; Bickerton, J.; ElSaied, N.I.; Suradi, S.; Carson, R.; AlTakhin, G.; Skinner, H.A., [Title unavailable], Organometallics, 1972, 1, 1166. [all data]

Junk and Svec, 1970
Junk, G.A.; Svec, H.J., The mass spectra, ionization potentials, and bond energies of the group VIIA decacarbonyls, J. Chem. Soc. A, 1970, 2102. [all data]

Winters and Kiser, 1965
Winters, R.E.; Kiser, R.W., Ions produced by electron impact with the dimetallic carbonyls of cobalt and manganese, J. Phys. Chem., 1965, 69, 1618. [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]

Svec and Junk, 1967
Svec, H.J.; Junk, G.A., Energetics of the ionization and dissociation of Mn₂(CO)₁₀, Re₂(CO)₁₀, and ReMn(CO)₁₀, J. Am. Chem. Soc., 1967, 89, 2836. [all data]

Bidinosti and McIntyre, 1966
Bidinosti, D.R.; McIntyre, N.S., The metal-metal bond dissociation energy in manganese carbonyl, Chem. Commun., 1966, 555. [all data]

Notes

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Symbols used in this document:

AE Appearance energy

Δ_rH° Enthalpy of reaction at standard conditions

Δ_rS° Entropy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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AE	Appearance energy
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions