chromium

• Formula: Cr
• Molecular weight: 51.9961
• IUPAC Standard InChI: InChI=1S/Cr Copy

  
• IUPAC Standard InChIKey: VYZAMTAEIAYCRO-UHFFFAOYSA-N Copy
• CAS Registry Number: 7440-47-3
• 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:
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • Ion clustering data
• Data at other public NIST sites:
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  • NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
  • Gas Phase Kinetics Database
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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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
MS - 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

 +  = ( • )

By formula: Cr⁺ + Cr = (Cr⁺ • Cr)

Enthalpy of reaction

(CAS Reg. No. 136056-49-0 • 4294967295) +  = CAS Reg. No. 136056-49-0

By formula: (CAS Reg. No. 136056-49-0 • 4294967295Cr) + Cr = CAS Reg. No. 136056-49-0

 (cr) = 6 (g) +  (cr)

By formula: C₆CrO₆ (cr) = 6CO (g) + Cr (cr)

(CAS Reg. No. 135774-12-8 • 4294967295) +  = CAS Reg. No. 135774-12-8

By formula: (CAS Reg. No. 135774-12-8 • 4294967295Cr) + Cr = CAS Reg. No. 135774-12-8

C₁₄H₁₀CrN₂O₄ (cr) = 2 (g) + 4 (g) +  (cr)

By formula: C₁₄H₁₀CrN₂O₄ (cr) = 2C₄H₄N₂ (g) + 4CO (g) + Cr (cr)

( • 10) +  = ( • 11)

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

Enthalpy of reaction

( • 11) +  = ( • 12)

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

Enthalpy of reaction

( • 12) +  = ( • 13)

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

Enthalpy of reaction

( • 13) +  = ( • 14)

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

Enthalpy of reaction

( • 14) +  = ( • 15)

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

Enthalpy of reaction

( • 15) +  = ( • 16)

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

Enthalpy of reaction

( • 16) +  = ( • 17)

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

Enthalpy of reaction

( • 17) +  = ( • 18)

By formula: (Cr⁺ • 17Cr) + Cr = (Cr⁺ • 18Cr)

Enthalpy of reaction

( • 18) +  = ( • 19)

By formula: (Cr⁺ • 18Cr) + Cr = (Cr⁺ • 19Cr)

Enthalpy of reaction

( • 19) +  = ( • 20)

By formula: (Cr⁺ • 19Cr) + Cr = (Cr⁺ • 20Cr)

Enthalpy of reaction

( • 9) +  = ( • 10)

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

Enthalpy of reaction

( • 2) +  = ( • 3)

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

Enthalpy of reaction

( • 3) +  = ( • 4)

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

Enthalpy of reaction

( • 4) +  = ( • 5)

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

Enthalpy of reaction

( • 5) +  = ( • 6)

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

Enthalpy of reaction

( • 6) +  = ( • 7)

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

Enthalpy of reaction

( • 7) +  = ( • 8)

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

Enthalpy of reaction

( • 8) +  = ( • 9)

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

Enthalpy of reaction

( • ) +  = ( • 2)

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

Enthalpy of reaction

(CAS Reg. No. 64911-49-5 • 4294967295) +  = CAS Reg. No. 64911-49-5

By formula: (CAS Reg. No. 64911-49-5 • 4294967295Cr) + Cr = CAS Reg. No. 64911-49-5

CrF₁₈P₆ (cr) =  (cr) + 6 (g)

By formula: CrF₁₈P₆ (cr) = Cr (cr) + 6F₃P (g)

References

Go To: Top, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Hilpert and Ruthardt, 1987
Hilpert, K.; Ruthardt, K., Determination of the dissociation energy of the Cr₂ molecule, Ber. Bunsen-Ges. Phys. Chem., 1987, 91, 724. [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]

Boltalina, Borshchevskii, et al., 1991
Boltalina, O.V.; Borshchevskii, A.Y.; Sidorov, L.N., Thermochemistry of Chromium Gaseous Fluorides and Their Negative Ions, Zh. Fiz. Khim. SSSR, 1991, 65, 884. [all data]

Pramann and Rademann, 1999
Pramann, A.; Rademann, K., Mass-spectrometric study of formation and stability of manganese and manganese oxide cluster anions, Int. J. Mass Spectrom., 1999, 187, 673-683, https://doi.org/10.1016/S1387-3806(98)14197-0 . [all data]

Al-Takhin, Connor, et al., 1984
Al-Takhin, G.; Connor, J.A.; Skinner, H.A.; Zaharani-Moettar, M.T., J. Organomet. Chem., 1984, 260, 189. [all data]

Pittam, Pilcher, et al., 1975
Pittam, D.A.; Pilcher, G.; Barnes, D.S.; Skinner, H.A.; Todd, D., J. Less-Common Met., 1975, 42, 217. [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]

Tel'noi and Rabinovich, 1977
Tel'noi, V.I.; Rabinovich, I.B., Russ. Chem. Rev., 1977, 46, 689. [all data]

Connor, Skinner, et al., 1972
Connor, J.A.; Skinner, H.A.; Virmani, Y., Microcalorimetric studies. Thermal decomposition and iodination of metal carbonyls, J. Chem. Soc., Faraday Trans. 1, 1972, 68, 0, 1754, https://doi.org/10.1039/f19726801754 . [all data]

Casey, Villata, et al., 1991
Casey, S.M.; Villata, P.W.; Bengali, A.A.; Cheng, C.-L.; Dick, J.P.; Fenn, P.T.; Leopold, D.G., A Study of Cr2 by Negative ion Photoelectron Spectroscopy, J. Am. Chem. Soc., 1991, 113, 17, 6688, https://doi.org/10.1021/ja00017a058 . [all data]

Casey and Leopold, 1993
Casey, S.M.; Leopold, D.G., Negative Ion Photoelectron Spectroscopy of Cr2, J. Phys. Chem., 1993, 97, 4, 816, https://doi.org/10.1021/j100106a005 . [all data]

Adedeji, Connor, et al., 1978
Adedeji, F.A.; Connor, J.A.; Demain, C.P.; Martinho Simões, J.A.; Skinner, H.A.; Zafarani- Moattar, M.T., J. Organometal. Chem., 1978, 149, 333. [all data]

Wenthold, Gunion, et al., 1996
Wenthold, P.G.; Gunion, R.F.; Lineberger, W.C., Ultraviolet Negative-ion Photoelectron Spectroscopy of the Chromium Oxide Negative Ion, Chem. Phys. Lett., 1996, 258, 1-2, 101, https://doi.org/10.1016/0009-2614(96)00611-2 . [all data]

Brown and Connor, 1974
Brown, D.L.S.; Connor, J.A., Skinner, H. A. J. Chem. Soc., Faraday Trans. I, 1974, 70, 1649. [all data]

Notes

Go To: Top, Reaction thermochemistry data, References

• Symbols used in this document:
  

  T	Temperature
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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