manganese
- Formula: Mn
- Molecular weight: 54.938045
- IUPAC Standard InChI: InChI=1S/Mn
- IUPAC Standard InChIKey: PWHULOQIROXLJO-UHFFFAOYSA-N
- CAS Registry Number: 7439-96-5
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Data at other public NIST sites:
- NIST Atomic Spectra Database - Lines Holdings (on physics web site)
- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
- NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
- Options:
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 67.701 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1967 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 41.520 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1967 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 2334.526 to 6000. |
|---|---|
| A | 44.85610 |
| B | -23.36370 |
| C | 4.826100 |
| D | -0.304631 |
| E | -42.42249 |
| F | 0.370148 |
| G | 52.50361 |
| H | 67.70010 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1967 |
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | 3.893 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1967 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 10.39 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1967 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 7.651 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1967 |
Liquid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 1519. to 2334.526 |
|---|---|
| A | 11.00000 |
| B | 4.668939×10-8 |
| C | -1.808610×10-8 |
| D | 2.404250×10-9 |
| E | 1.344110×10-8 |
| F | -1.865211 |
| G | 19.28550 |
| H | 3.893170 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1967 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 298. to 980. | 980. to 1361. | 1361. to 1412. | 1412. to 1519. |
|---|---|---|---|---|
| A | 6.510971 | 12.49969 | 4.556525 | -127.6702 |
| B | 1.251827 | -6.853633 | 7.507983 | 162.2976 |
| C | 1.860220 | 5.135445 | -3.583533 | -70.83413 |
| D | -0.506334 | -1.190213 | 0.768341 | 11.09622 |
| E | -0.067427 | -0.581276 | 0.446245 | 38.56166 |
| F | -2.238741 | -5.077271 | -0.659149 | 112.0256 |
| G | 14.69799 | 21.67978 | 11.66085 | -94.05808 |
| H | 0.000000 | 0.000000 | 0.000000 | 0.000000 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1967 | Data last reviewed in September, 1967 | Data last reviewed in September, 1967 | Data last reviewed in September, 1967 |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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
+
= (
•
)
By formula: Mn+ + Mn = (Mn+ • Mn)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 48. ± 6.9 | kcal/mol | ICRCD | Houriet and Vulpius, 1989 | gas phase |
| ΔrH° | 32. | kcal/mol | PDiss | Jarrold, Illies, et al., 1985 | gas phase; ΔrH> |
| ΔrH° | 20. | kcal/mol | KC-MS | Ervin, Loh, et al., 1983 | gas phase; obtained using D(Mn)2 = 7.3+-6.9 kcal/mol |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, References, Notes
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
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to Mn+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 7.43402 ± 0.00002 | eV | N/A | N/A | L |
| Quantity | Value | Units | Method | Reference | Comment |
| Proton affinity (review) | 190.6 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 185.1 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.43402 | EVAL | Lide, 1992 | LL |
| 7.4340 | S | Kelly, 1987 | LBLHLM |
| 7.43402 ± 0.00002 | S | Sugar and Corliss, 1985 | LBLHLM |
| 7.43 | PE | Dyke, Fayad, et al., 1979 | LLK |
| 7.43402 ± 0.00001 | S | Brown and Ginter, 1978 | LLK |
| 7.435 | S | Moore, 1970 | RDSH |
Ion clustering data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
+
= (
•
)
By formula: Mn+ + Mn = (Mn+ • Mn)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 48. ± 6.9 | kcal/mol | ICRCD | Houriet and Vulpius, 1989 | gas phase |
| ΔrH° | 32. | kcal/mol | PDiss | Jarrold, Illies, et al., 1985 | gas phase; ΔrH> |
| ΔrH° | 20. | kcal/mol | KC-MS | Ervin, Loh, et al., 1983 | gas phase; obtained using D(Mn)2 = 7.3+-6.9 kcal/mol |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Houriet and Vulpius, 1989
Houriet, R.; Vulpius, T.,
Formation of Metal Cluster Ions by Gas - Phase Ion - Molecule Reactions: the Bond Energies of Cr2+ and Mn2+,
Chem. Phys. Lett., 1989, 154, 5, 454, https://doi.org/10.1016/0009-2614(89)87130-1
. [all data]
Jarrold, Illies, et al., 1985
Jarrold, M.F.; Illies, A.J.; Wagner-Redeker, W.; Bowers, M.T.,
Photodissociation of Weakly Bound Ion - Molecule Clusters: The Kr.CO2+ Cluster,
J. Phys. Chem., 1985, 89, 15, 3269, https://doi.org/10.1021/j100261a020
. [all data]
Ervin, Loh, et al., 1983
Ervin, K.; Loh, S.K.; Aristov, N.; Armentrout, P.B.,
Metal cluster ions: The bond energy of Mn2+,
J. Phys. Chem., 1983, 87, 3593. [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]
Lide, 1992
Lide, D.R. (Editor),
Ionization potentials of atoms and atomic ions
in Handbook of Chem. and Phys., 1992, 10-211. [all data]
Kelly, 1987
Kelly, R.L.,
Atomic and ionic spectrum lines of hydrogen through kryton,
J. Phys. Chem. Ref. Data, 1987, 16. [all data]
Sugar and Corliss, 1985
Sugar, J.; Corliss, C.,
Atomic energy levels of the iron period elements: Potassium through nickel,
J. Phys. Chem. Ref. Data, 1985, 14. [all data]
Dyke, Fayad, et al., 1979
Dyke, J.M.; Fayad, N.K.; Morris, A.; Trickle, I.R.,
Gas-phase He I photoelectron spectra of some transition metals: Cu, Ag, Au, Cr and Mn,
J. Phys. B:, 1979, 12, 2985. [all data]
Brown and Ginter, 1978
Brown, C.M.; Ginter, M.L.,
Absorption spectrum of Mn I between 1305 and 2040,
J. Opt. Soc. Am., 1978, 68, 1541. [all data]
Moore, 1970
Moore, C.E.,
Ionization potentials and ionization limits derived from the analyses of optical spectra,
Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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