cobalt


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.

Quantity Value Units Method Reference Comment
Δfgas426.68kJ/molReviewChase, 1998Data last reviewed in September, 1967
Quantity Value Units Method Reference Comment
gas,1 bar179.51J/mol*KReviewChase, 1998Data 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 3184.943 to 6000.
A 40.74325
B -8.456702
C 1.539888
D -0.065190
E -11.14940
F 397.2461
G 212.9171
H 426.6760
ReferenceChase, 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
Δfliquid18.00kJ/molReviewChase, 1998Data last reviewed in September, 1967
Quantity Value Units Method Reference Comment
liquid,1 bar41.00J/mol*KReviewChase, 1998Data last reviewed in September, 1967
Quantity Value Units Method Reference Comment
solid30.07J/mol*KReviewChase, 1998Data 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1768. to 3184.943
A 45.61355
B -3.806989
C 1.031499
D -0.096701
E -3.332744
F -8.135203
G 78.01905
H 18.00400
ReferenceChase, 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 700.700. to 1394.1394. to 1768.
A 10.99430-204.5760-12418.90
B 54.37500515.582015326.40
C -55.51320-421.5500-7087.150
D 25.81700129.55801167.310
E 0.16453317.926703319.770
F -4.70330094.6155010138.70
G 30.32580-272.8560-10472.80
H 0.0000000.0000000.000000
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in September, 1967 Data last reviewed in September, 1967 Data last reviewed in September, 1967

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 as indicated in comments:
MS - José A. Martinho Simões
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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

Cobalt, tetracarbonylhydro- (g) = 0.5Hydrogen (g) + 4Carbon monoxide (g) + cobalt (cr)

By formula: C4HCoO4 (g) = 0.5H2 (g) + 4CO (g) + Co (cr)

Quantity Value Units Method Reference Comment
Δr127.1 ± 2.1kJ/molEqGBronshstein, Gankin, et al., 1966Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970. Temperature range: ca. 423-533 K; MS

C12Co4O12 (cr) = 12Carbon monoxide (g) + 4cobalt (cr)

By formula: C12Co4O12 (cr) = 12CO (g) + 4Co (cr)

Quantity Value Units Method Reference Comment
Δr518. ± 14.kJ/molTD-HFCConnor, Skinner, et al., 1973MS
Δr516. ± 14.kJ/molHAL-HFCConnor, Skinner, et al., 1973MS

(Cobalt ion (1+) • 10cobalt) + cobalt = (Cobalt ion (1+) • 11cobalt)

By formula: (Co+ • 10Co) + Co = (Co+ • 11Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
329. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 11cobalt) + cobalt = (Cobalt ion (1+) • 12cobalt)

By formula: (Co+ • 11Co) + Co = (Co+ • 12Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
351. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 12cobalt) + cobalt = (Cobalt ion (1+) • 13cobalt)

By formula: (Co+ • 12Co) + Co = (Co+ • 13Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
303. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 13cobalt) + cobalt = (Cobalt ion (1+) • 14cobalt)

By formula: (Co+ • 13Co) + Co = (Co+ • 14Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
380. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 14cobalt) + cobalt = (Cobalt ion (1+) • 15cobalt)

By formula: (Co+ • 14Co) + Co = (Co+ • 15Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
355. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 15cobalt) + cobalt = (Cobalt ion (1+) • 16cobalt)

By formula: (Co+ • 15Co) + Co = (Co+ • 16Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
346. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 16cobalt) + cobalt = (Cobalt ion (1+) • 17cobalt)

By formula: (Co+ • 16Co) + Co = (Co+ • 17Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
371. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 9cobalt) + cobalt = (Cobalt ion (1+) • 10cobalt)

By formula: (Co+ • 9Co) + Co = (Co+ • 10Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
314. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 2cobalt) + cobalt = (Cobalt ion (1+) • 3cobalt)

By formula: (Co+ • 2Co) + Co = (Co+ • 3Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
205. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 3cobalt) + cobalt = (Cobalt ion (1+) • 4cobalt)

By formula: (Co+ • 3Co) + Co = (Co+ • 4Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
274. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 4cobalt) + cobalt = (Cobalt ion (1+) • 5cobalt)

By formula: (Co+ • 4Co) + Co = (Co+ • 5Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
319. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 5cobalt) + cobalt = (Cobalt ion (1+) • 6cobalt)

By formula: (Co+ • 5Co) + Co = (Co+ • 6Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
283. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 6cobalt) + cobalt = (Cobalt ion (1+) • 7cobalt)

By formula: (Co+ • 6Co) + Co = (Co+ • 7Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
303. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 7cobalt) + cobalt = (Cobalt ion (1+) • 8cobalt)

By formula: (Co+ • 7Co) + Co = (Co+ • 8Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
283. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • 8cobalt) + cobalt = (Cobalt ion (1+) • 9cobalt)

By formula: (Co+ • 8Co) + Co = (Co+ • 9Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
285. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Cobalt ion (1+) • cobalt) + cobalt = (Cobalt ion (1+) • 2cobalt)

By formula: (Co+ • Co) + Co = (Co+ • 2Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
201. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Dicobalt octacarbonyl (cr) = 8Carbon monoxide (g) + 2cobalt (cr)

By formula: C8Co2O8 (cr) = 8CO (g) + 2Co (cr)

Quantity Value Units Method Reference Comment
Δr364.0 ± 8.4kJ/molTD-HFCConnor, Skinner, et al., 1973Please also see Pedley and Rylance, 1977.; MS

Cobalt ion (1+) + cobalt = (Cobalt ion (1+) • cobalt)

By formula: Co+ + Co = (Co+ • Co)

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
267. CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(CAS Reg. No. 104120-67-4 • 4294967295cobalt) + cobalt = CAS Reg. No. 104120-67-4

By formula: (CAS Reg. No. 104120-67-4 • 4294967295Co) + Co = CAS Reg. No. 104120-67-4

Quantity Value Units Method Reference Comment
Δr210. ± 8.8kJ/molN/ALeopold and Lineberger, 1986gas phase; B

(CAS Reg. No. 64899-90-7 • 4294967295cobalt) + cobalt = CAS Reg. No. 64899-90-7

By formula: (CAS Reg. No. 64899-90-7 • 4294967295Co) + Co = CAS Reg. No. 64899-90-7

Quantity Value Units Method Reference Comment
Δr158. ± 13.kJ/molN/AMiller, Feigerle, et al., 1987gas phase; B

cyclopentadienide anion + cobalt = C5H5Co-

By formula: C5H5- + Co = C5H5Co-

Quantity Value Units Method Reference Comment
Δr29.3 ± 2.5kJ/molN/ASunderlin and Squires, 1999gas phase; B

References

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

Bronshstein, Gankin, et al., 1966
Bronshstein, Yu.E.; Gankin, V.Yu.; Krinkin, D.P.; Rudkovskii, D.M., Russ. J. Phys. Chem., 1966, 40, 802. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [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]

Connor, Skinner, et al., 1973
Connor, J.A.; Skinner, H.A.; Virmani, Y., High temperature microcalorimetric studies of the thermal decomposition and iodination of polynuclear carbonyls of Fe, Co, Ru, Rh, Re, Os and Ir, Faraday Symp. Chem. Soc., 1973, 8, 18, https://doi.org/10.1039/fs9730800018 . [all data]

Armentrout and Kickel, 1994
Armentrout, P.B.; Kickel, B.L., Gas Phase Thermochemistry of Transition Metal Ligand Systems: Reassessment of Values and Periodic Trends, in Organometallic Ion Chemistry, B. S. Freiser, ed, 1994. [all data]

Leopold and Lineberger, 1986
Leopold, D.G.; Lineberger, W.C., A study of the low-lying electronic states of Fe2 and Co2 by negative ion photoelectron spectroscopy, J. Chem. Phys., 1986, 85, 51. [all data]

Miller, Feigerle, et al., 1987
Miller, A.E.S.; Feigerle, C.S.; Lineberger, W.C., Laser photoelectron spectroscopy of CrH-, CoH-, and NiH-: Periodic trends in the electronic structure of the transition-metal hydrides, J. Chem. Phys., 1987, 86, 1549. [all data]

Sunderlin and Squires, 1999
Sunderlin, L.S.; Squires, R.R., Bond strengths in cyclopentadienyl metal carbonyl anions, Int. J. Mass Spectrom., 1999, 183, 149-161, https://doi.org/10.1016/S1387-3806(98)14230-6 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References