Chromium ion (1+)

Gas phase thermochemistry data

Go To: Top, 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.

Quantity Value Units Method Reference Comment
S°gas,1 bar41.355cal/mol*KReviewChase, 1998Data last reviewed in March, 1984

Reaction thermochemistry data

Go To: Top, Gas phase 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 compiled as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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.

Reactions 1 to 50

Chromium ion (1+) + chromium = (Chromium ion (1+) • chromium)

By formula: Cr+ + Cr = (Cr+ • Cr)

Quantity Value Units Method Reference Comment
ΔrH°37. ± 5.kcal/molICRCDHouriet and Vulpius, 1989gas phase; M
ΔrH°42.kcal/molEIHilpert and Ruthardt, 1987gas phase; from IP(Cr2) by EI and D(Cr2) by Knudsen cell, and IP(Cr); M
ΔrH°43. ± 5.kcal/molKC-MSHilpert and Ruthardt, 1987gas phase; data as evaluated by Houriet and Vulpius, 1989; M

Enthalpy of reaction

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

(Chromium ion (1+) • neon) + neon = (Chromium ion (1+) • 2neon)

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

Quantity Value Units Method Reference Comment
ΔrH°0.9 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.90 kcal/mol, ΔrS(100 K) = 6.8 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°5.7cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.90 kcal/mol, ΔrS(100 K) = 6.8 cal/mol*K; M

Chromium ion (1+) + neon = (Chromium ion (1+) • neon)

By formula: Cr+ + Ne = (Cr+ • Ne)

Quantity Value Units Method Reference Comment
ΔrH°1.6 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.38 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°14.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.38 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M

Chromium ion (1+) + Argon = (Chromium ion (1+) • Argon)

By formula: Cr+ + Ar = (Cr+ • Ar)

Quantity Value Units Method Reference Comment
ΔrH°6.9 ± 0.4kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 6.55 kcal/mol, ΔrS(100 K) = 14.4 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°15.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 6.55 kcal/mol, ΔrS(100 K) = 14.4 cal/mol*K; M

Chromium ion (1+) + helium = (Chromium ion (1+) • helium)

By formula: Cr+ + He = (Cr+ • He)

Quantity Value Units Method Reference Comment
ΔrH°1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°14.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M

Chromium ion (1+) + Benzene = (Chromium ion (1+) • Benzene)

By formula: Cr+ + C6H6 = (Cr+ • C6H6)

Quantity Value Units Method Reference Comment
ΔrH°40.2kcal/molMIDLin, Chen, et al., 1997RCD
ΔrH°39.2 ± 3.3kcal/molRAKLin and Dunbar, 1997RCD
ΔrH°40.6 ± 2.4kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
40.6 (+2.3,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Chromium ion (1+) + Water = (Chromium ion (1+) • Water)

By formula: Cr+ + H2O = (Cr+ • H2O)

Quantity Value Units Method Reference Comment
ΔrH°29. ± 3.kcal/molCIDMagnera, David, et al., 1989gas phase; M
ΔrH°21.9kcal/molCIDMarinelli and Squires, 1989gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
30.8 (+2.2,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • Benzene) + Benzene = (Chromium ion (1+) • 2Benzene)

By formula: (Cr+ • C6H6) + C6H6 = (Cr+ • 2C6H6)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD
ΔrH°55.4 ± 4.3kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
55.3 (+4.4,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Chromium ion (1+) • Water) + Water = (Chromium ion (1+) • 2Water)

By formula: (Cr+ • H2O) + H2O = (Cr+ • 2H2O)

Quantity Value Units Method Reference Comment
ΔrH°29.5kcal/molCIDMarinelli and Squires, 1989gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
33.9 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Ethylene = (Chromium ion (1+) • Ethylene)

By formula: Cr+ + C2H4 = (Cr+ • C2H4)

Quantity Value Units Method Reference Comment
ΔrH°22.9 ± 2.6kcal/molCIDTSievers, Jarvis, et al., 1998RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
29.9 (+4.5,-0.) CIDArmentrout and Kickel, 1994gas phase; ΔrH>=, guided ion beam CID; M

(Chromium ion (1+) • 2Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 3Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°12.9 ± 1.4kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.9 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 3Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 4Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°12.2 ± 1.8kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.2 (+1.9,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 4Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 5Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°14.8 ± 0.7kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
14.8 (+0.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 2Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°22.6 ± 0.7kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
22.7 (+0.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Carbon monoxide = (Chromium ion (1+) • Carbon monoxide)

By formula: Cr+ + CO = (Cr+ • CO)

Quantity Value Units Method Reference Comment
ΔrH°21.4 ± 0.9kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
21.5 (+1.0,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • Ammonia) + Ammonia = (Chromium ion (1+) • 2Ammonia)

By formula: (Cr+ • H3N) + H3N = (Cr+ • 2H3N)

Quantity Value Units Method Reference Comment
ΔrH°42.8 ± 2.2kcal/molCIDTWalter and Armentrout, 1998RCD
ΔrH°40.8kcal/molCIDMarinelli and Squires, 1989gas phase; M

Chromium ion (1+) + Ammonia = (Chromium ion (1+) • Ammonia)

By formula: Cr+ + H3N = (Cr+ • H3N)

Quantity Value Units Method Reference Comment
ΔrH°43.5 ± 2.4kcal/molCIDTWalter and Armentrout, 1998RCD
ΔrH°37.4kcal/molCIDMarinelli and Squires, 1989gas phase; M

Chromium ion (1+) + Carbon monosulfide = (Chromium ion (1+) • Carbon monosulfide)

By formula: Cr+ + CS = (Cr+ • CS)

Quantity Value Units Method Reference Comment
ΔrH°38.9 ± 1.4kcal/molCIDTRue, Armentrout, et al., 2001RCD
ΔrH°37.8 ± 2.2kcal/molCIDTRodgers and Armentrout, 2000RCD

(Chromium ion (1+) • 3Water) + Water = (Chromium ion (1+) • 4Water)

By formula: (Cr+ • 3H2O) + H2O = (Cr+ • 4H2O)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.2 (+1.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 2Water) + Water = (Chromium ion (1+) • 3Water)

By formula: (Cr+ • 2H2O) + H2O = (Cr+ • 3H2O)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12. (+12.,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 5Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 6Carbon monoxide)

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

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
31.0 (+1.9,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Benzene, 1,2,3,5-tetrafluoro- = (Chromium ion (1+) • Benzene, 1,2,3,5-tetrafluoro-)

By formula: Cr+ + C6H2F4 = (Cr+ • C6H2F4)

Quantity Value Units Method Reference Comment
ΔrH°24.6kcal/molRAKRyzhov, 1999RCD
Quantity Value Units Method Reference Comment
ΔrS°1.2450×10+6cal/mol*KRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,2,3,4-tetrafluoro- = (Chromium ion (1+) • Benzene, 1,2,3,4-tetrafluoro-)

By formula: Cr+ + C6H2F4 = (Cr+ • C6H2F4)

Quantity Value Units Method Reference Comment
ΔrH°25.4kcal/molRAKRyzhov, 1999RCD
Quantity Value Units Method Reference Comment
ΔrS°1.2350×10+6cal/mol*KRAKRyzhov, 1999RCD

(Chromium ion (1+) • 10chromium) + chromium = (Chromium ion (1+) • 11chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 11chromium) + chromium = (Chromium ion (1+) • 12chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 12chromium) + chromium = (Chromium ion (1+) • 13chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 13chromium) + chromium = (Chromium ion (1+) • 14chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 14chromium) + chromium = (Chromium ion (1+) • 15chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 15chromium) + chromium = (Chromium ion (1+) • 16chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 16chromium) + chromium = (Chromium ion (1+) • 17chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 17chromium) + chromium = (Chromium ion (1+) • 18chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 18chromium) + chromium = (Chromium ion (1+) • 19chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 19chromium) + chromium = (Chromium ion (1+) • 20chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 9chromium) + chromium = (Chromium ion (1+) • 10chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 2chromium) + chromium = (Chromium ion (1+) • 3chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 3chromium) + chromium = (Chromium ion (1+) • 4chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 4chromium) + chromium = (Chromium ion (1+) • 5chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 5chromium) + chromium = (Chromium ion (1+) • 6chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 6chromium) + chromium = (Chromium ion (1+) • 7chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 7chromium) + chromium = (Chromium ion (1+) • 8chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 8chromium) + chromium = (Chromium ion (1+) • 9chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • chromium) + chromium = (Chromium ion (1+) • 2chromium)

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

Enthalpy of reaction

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

Chromium ion (1+) + Acetylene = (Chromium ion (1+) • Acetylene)

By formula: Cr+ + C2H2 = (Cr+ • C2H2)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
44.0 (+4.8,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Allene = (Chromium ion (1+) • Allene)

By formula: Cr+ + C3H4 = (Cr+ • C3H4)

Quantity Value Units Method Reference Comment
ΔrH°42.0 ± 2.0kcal/molCIDTFisher and Armentrout, 1992propyne or allene; RCD

(Chromium ion (1+) • 2Ammonia) + Ammonia = (Chromium ion (1+) • 3Ammonia)

By formula: (Cr+ • 2H3N) + H3N = (Cr+ • 3H3N)

Quantity Value Units Method Reference Comment
ΔrH°12.9 ± 1.4kcal/molCIDTWalter and Armentrout, 1998RCD

(Chromium ion (1+) • 3Ammonia) + Ammonia = (Chromium ion (1+) • 4Ammonia)

By formula: (Cr+ • 3H3N) + H3N = (Cr+ • 4H3N)

Quantity Value Units Method Reference Comment
ΔrH°7.2 ± 2.2kcal/molCIDTWalter and Armentrout, 1998RCD

(Chromium ion (1+) • p-Xylene) + p-Xylene = (Chromium ion (1+) • 2p-Xylene)

By formula: (Cr+ • C8H10) + C8H10 = (Cr+ • 2C8H10)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 6.9kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • Mesitylene) + Mesitylene = (Chromium ion (1+) • 2Mesitylene)

By formula: (Cr+ • C9H12) + C9H12 = (Cr+ • 2C9H12)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • Toluene) + Toluene = (Chromium ion (1+) • 2Toluene)

By formula: (Cr+ • C7H8) + C7H8 = (Cr+ • 2C7H8)

Quantity Value Units Method Reference Comment
ΔrH°53.1 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • Ethylene) + Ethylene = (Chromium ion (1+) • 2Ethylene)

By formula: (Cr+ • C2H4) + C2H4 = (Cr+ • 2C2H4)

Quantity Value Units Method Reference Comment
ΔrH°25.8 ± 2.6kcal/molCIDTSievers, Jarvis, et al., 1998RCD

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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

Chromium ion (1+) + Argon = (Chromium ion (1+) • Argon)

By formula: Cr+ + Ar = (Cr+ • Ar)

Quantity Value Units Method Reference Comment
ΔrH°6.9 ± 0.4kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 6.55 kcal/mol, ΔrS(100 K) = 14.4 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°15.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 6.55 kcal/mol, ΔrS(100 K) = 14.4 cal/mol*K; M

Chromium ion (1+) + Methylene = (Chromium ion (1+) • Methylene)

By formula: Cr+ + CH2 = (Cr+ • CH2)

Quantity Value Units Method Reference Comment
ΔrH°53.8 ± 1.9kcal/molCIDTGeorgiadis and Armentrout, 1989RCD

Chromium ion (1+) + Methyl radical = (Chromium ion (1+) • Methyl radical)

By formula: Cr+ + CH3 = (Cr+ • CH3)

Quantity Value Units Method Reference Comment
ΔrH°30.2 ± 2.3kcal/molCIDTGeorgiadis and Armentrout, 1989RCD

Chromium ion (1+) + Carbon monoxide = (Chromium ion (1+) • Carbon monoxide)

By formula: Cr+ + CO = (Cr+ • CO)

Quantity Value Units Method Reference Comment
ΔrH°21.4 ± 0.9kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
21.5 (+1.0,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 2Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°22.6 ± 0.7kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
22.7 (+0.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 2Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 3Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°12.9 ± 1.4kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.9 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 3Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 4Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°12.2 ± 1.8kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.2 (+1.9,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 4Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 5Carbon monoxide)

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

Quantity Value Units Method Reference Comment
ΔrH°14.8 ± 0.7kcal/molCIDTKhan, Clemmer, et al., 1993RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
14.8 (+0.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 5Carbon monoxide) + Carbon monoxide = (Chromium ion (1+) • 6Carbon monoxide)

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

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
31.0 (+1.9,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Carbon monosulfide = (Chromium ion (1+) • Carbon monosulfide)

By formula: Cr+ + CS = (Cr+ • CS)

Quantity Value Units Method Reference Comment
ΔrH°38.9 ± 1.4kcal/molCIDTRue, Armentrout, et al., 2001RCD
ΔrH°37.8 ± 2.2kcal/molCIDTRodgers and Armentrout, 2000RCD

Chromium ion (1+) + Acetylene = (Chromium ion (1+) • Acetylene)

By formula: Cr+ + C2H2 = (Cr+ • C2H2)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
44.0 (+4.8,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Vinyl radical = (Chromium ion (1+) • Vinyl radical)

By formula: Cr+ + C2H3 = (Cr+ • C2H3)

Quantity Value Units Method Reference Comment
ΔrH°59.0 ± 2.3kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + Ethylene = (Chromium ion (1+) • Ethylene)

By formula: Cr+ + C2H4 = (Cr+ • C2H4)

Quantity Value Units Method Reference Comment
ΔrH°22.9 ± 2.6kcal/molCIDTSievers, Jarvis, et al., 1998RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
29.9 (+4.5,-0.) CIDArmentrout and Kickel, 1994gas phase; ΔrH>=, guided ion beam CID; M

(Chromium ion (1+) • Ethylene) + Ethylene = (Chromium ion (1+) • 2Ethylene)

By formula: (Cr+ • C2H4) + C2H4 = (Cr+ • 2C2H4)

Quantity Value Units Method Reference Comment
ΔrH°25.8 ± 2.6kcal/molCIDTSievers, Jarvis, et al., 1998RCD

Chromium ion (1+) + CHCH3 = (Chromium ion (1+) • CHCH3)

By formula: Cr+ + C2H4 = (Cr+ • C2H4)

Quantity Value Units Method Reference Comment
ΔrH°52.0 ± 3.0kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + Ethyl radical = (Chromium ion (1+) • Ethyl radical)

By formula: Cr+ + C2H5 = (Cr+ • C2H5)

Quantity Value Units Method Reference Comment
ΔrH°35.0 ± 2.1kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + Acetone-D6 = (Chromium ion (1+) • Acetone-D6)

By formula: Cr+ + C3D6O = (Cr+ • C3D6O)

Quantity Value Units Method Reference Comment
ΔrH°37.3 ± 3.3kcal/molRAKLin, Chen, et al., 1997, 2RCD

Chromium ion (1+) + Allene = (Chromium ion (1+) • Allene)

By formula: Cr+ + C3H4 = (Cr+ • C3H4)

Quantity Value Units Method Reference Comment
ΔrH°42.0 ± 2.0kcal/molCIDTFisher and Armentrout, 1992propyne or allene; RCD

Chromium ion (1+) + Acetone = (Chromium ion (1+) • Acetone)

By formula: Cr+ + C3H6O = (Cr+ • C3H6O)

Quantity Value Units Method Reference Comment
ΔrH°41.8 ± 3.3kcal/molRAKLin, Chen, et al., 1997, 2RCD

Chromium ion (1+) + CHCH2CH3 = (Chromium ion (1+) • CHCH2CH3)

By formula: Cr+ + C3H6 = (Cr+ • C3H6)

Quantity Value Units Method Reference Comment
ΔrH°36.0 ± 3.0kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + C(CH3)2 = (Chromium ion (1+) • C(CH3)2)

By formula: Cr+ + C3H6 = (Cr+ • C3H6)

Quantity Value Units Method Reference Comment
ΔrH°39.0 ± 3.0kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + Isopropyl radical = (Chromium ion (1+) • Isopropyl radical)

By formula: Cr+ + C3H7 = (Cr+ • C3H7)

Quantity Value Units Method Reference Comment
ΔrH°28.5 ± 1.3kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + n-Propyl radical = (Chromium ion (1+) • n-Propyl radical)

By formula: Cr+ + C3H7 = (Cr+ • C3H7)

Quantity Value Units Method Reference Comment
ΔrH°32.1 ± 1.4kcal/molCIDTFisher and Armentrout, 1992RCD

Chromium ion (1+) + 1,3-Diazine = (Chromium ion (1+) • 1,3-Diazine)

By formula: Cr+ + C4H4N2 = (Cr+ • C4H4N2)

Quantity Value Units Method Reference Comment
ΔrH°42.4 ± 1.5kcal/molCIDTAmunugama and Rodgers, 2001RCD

Chromium ion (1+) + Pyrrole = (Chromium ion (1+) • Pyrrole)

By formula: Cr+ + C4H5N = (Cr+ • C4H5N)

Quantity Value Units Method Reference Comment
ΔrH°42.5kcal/molRAKGapeev and Yang, 2000RCD

(Chromium ion (1+) • Pyrrole) + Pyrrole = (Chromium ion (1+) • 2Pyrrole)

By formula: (Cr+ • C4H5N) + C4H5N = (Cr+ • 2C4H5N)

Quantity Value Units Method Reference Comment
ΔrH°34.9kcal/molRAKGapeev and Yang, 2000RCD

Chromium ion (1+) + Pyridine = (Chromium ion (1+) • Pyridine)

By formula: Cr+ + C5H5N = (Cr+ • C5H5N)

Quantity Value Units Method Reference Comment
ΔrH°47.1 ± 2.8kcal/molCIDTRodgers, Stanley, et al., 2000RCD

Chromium ion (1+) + Adenine = (Chromium ion (1+) • Adenine)

By formula: Cr+ + C5H5N5 = (Cr+ • C5H5N5)

Quantity Value Units Method Reference Comment
ΔrH°55.1 ± 1.8kcal/molCIDTRodgers and Armentrout, 2002RCD

Chromium ion (1+) + Benzene, hexafluoro- = (Chromium ion (1+) • Benzene, hexafluoro-)

By formula: Cr+ + C6F6 = (Cr+ • C6F6)

Quantity Value Units Method Reference Comment
ΔrH°18.9kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, pentafluoro- = (Chromium ion (1+) • Benzene, pentafluoro-)

By formula: Cr+ + C6HF5 = (Cr+ • C6HF5)

Quantity Value Units Method Reference Comment
ΔrH°23.7kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,2,4,5-tetrafluoro- = (Chromium ion (1+) • Benzene, 1,2,4,5-tetrafluoro-)

By formula: Cr+ + C6H2F4 = (Cr+ • C6H2F4)

Quantity Value Units Method Reference Comment
ΔrH°26.6kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,2,3,4-tetrafluoro- = (Chromium ion (1+) • Benzene, 1,2,3,4-tetrafluoro-)

By formula: Cr+ + C6H2F4 = (Cr+ • C6H2F4)

Quantity Value Units Method Reference Comment
ΔrH°25.4kcal/molRAKRyzhov, 1999RCD
Quantity Value Units Method Reference Comment
ΔrS°1.2350×10+6cal/mol*KRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,2,3,5-tetrafluoro- = (Chromium ion (1+) • Benzene, 1,2,3,5-tetrafluoro-)

By formula: Cr+ + C6H2F4 = (Cr+ • C6H2F4)

Quantity Value Units Method Reference Comment
ΔrH°24.6kcal/molRAKRyzhov, 1999RCD
Quantity Value Units Method Reference Comment
ΔrS°1.2450×10+6cal/mol*KRAKRyzhov, 1999RCD

Chromium ion (1+) + 1,2,4-Trifluorobenzene = (Chromium ion (1+) • 1,2,4-Trifluorobenzene)

By formula: Cr+ + C6H3F3 = (Cr+ • C6H3F3)

Quantity Value Units Method Reference Comment
ΔrH°29.9kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + 1,3,5-Trifluorobenzene = (Chromium ion (1+) • 1,3,5-Trifluorobenzene)

By formula: Cr+ + C6H3F3 = (Cr+ • C6H3F3)

Quantity Value Units Method Reference Comment
ΔrH°26.3kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + 1,2,3-Trifluorobenzene = (Chromium ion (1+) • 1,2,3-Trifluorobenzene)

By formula: Cr+ + C6H3F3 = (Cr+ • C6H3F3)

Quantity Value Units Method Reference Comment
ΔrH°29.3kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,2-difluoro- = (Chromium ion (1+) • Benzene, 1,2-difluoro-)

By formula: Cr+ + C6H4F2 = (Cr+ • C6H4F2)

Quantity Value Units Method Reference Comment
ΔrH°32.9kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,3-difluoro- = (Chromium ion (1+) • Benzene, 1,3-difluoro-)

By formula: Cr+ + C6H4F2 = (Cr+ • C6H4F2)

Quantity Value Units Method Reference Comment
ΔrH°32.0kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, 1,4-difluoro- = (Chromium ion (1+) • Benzene, 1,4-difluoro-)

By formula: Cr+ + C6H4F2 = (Cr+ • C6H4F2)

Quantity Value Units Method Reference Comment
ΔrH°29.0kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene, fluoro- = (Chromium ion (1+) • Benzene, fluoro-)

By formula: Cr+ + C6H5F = (Cr+ • C6H5F)

Quantity Value Units Method Reference Comment
ΔrH°39.2kcal/molRAKRyzhov, 1999RCD

Chromium ion (1+) + Benzene = (Chromium ion (1+) • Benzene)

By formula: Cr+ + C6H6 = (Cr+ • C6H6)

Quantity Value Units Method Reference Comment
ΔrH°40.2kcal/molMIDLin, Chen, et al., 1997RCD
ΔrH°39.2 ± 3.3kcal/molRAKLin and Dunbar, 1997RCD
ΔrH°40.6 ± 2.4kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
40.6 (+2.3,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Chromium ion (1+) • Benzene) + Benzene = (Chromium ion (1+) • 2Benzene)

By formula: (Cr+ • C6H6) + C6H6 = (Cr+ • 2C6H6)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD
ΔrH°55.4 ± 4.3kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
55.3 (+4.4,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Chromium ion (1+) + Toluene = (Chromium ion (1+) • Toluene)

By formula: Cr+ + C7H8 = (Cr+ • C7H8)

Quantity Value Units Method Reference Comment
ΔrH°42.1 ± 3.3kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • Toluene) + Toluene = (Chromium ion (1+) • 2Toluene)

By formula: (Cr+ • C7H8) + C7H8 = (Cr+ • 2C7H8)

Quantity Value Units Method Reference Comment
ΔrH°53.1 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD

Chromium ion (1+) + p-Xylene = (Chromium ion (1+) • p-Xylene)

By formula: Cr+ + C8H10 = (Cr+ • C8H10)

Quantity Value Units Method Reference Comment
ΔrH°43.0 ± 4.5kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • p-Xylene) + p-Xylene = (Chromium ion (1+) • 2p-Xylene)

By formula: (Cr+ • C8H10) + C8H10 = (Cr+ • 2C8H10)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 6.9kcal/molRAKLin and Dunbar, 1997RCD

Chromium ion (1+) + Mesitylene = (Chromium ion (1+) • Mesitylene)

By formula: Cr+ + C9H12 = (Cr+ • C9H12)

Quantity Value Units Method Reference Comment
ΔrH°46.1 ± 6.9kcal/molRAKLin and Dunbar, 1997RCD

(Chromium ion (1+) • Mesitylene) + Mesitylene = (Chromium ion (1+) • 2Mesitylene)

By formula: (Cr+ • C9H12) + C9H12 = (Cr+ • 2C9H12)

Quantity Value Units Method Reference Comment
ΔrH°50.7 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD

Chromium ion (1+) + chromium = (Chromium ion (1+) • chromium)

By formula: Cr+ + Cr = (Cr+ • Cr)

Quantity Value Units Method Reference Comment
ΔrH°37. ± 5.kcal/molICRCDHouriet and Vulpius, 1989gas phase; M
ΔrH°42.kcal/molEIHilpert and Ruthardt, 1987gas phase; from IP(Cr2) by EI and D(Cr2) by Knudsen cell, and IP(Cr); M
ΔrH°43. ± 5.kcal/molKC-MSHilpert and Ruthardt, 1987gas phase; data as evaluated by Houriet and Vulpius, 1989; M

Enthalpy of reaction

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

(Chromium ion (1+) • chromium) + chromium = (Chromium ion (1+) • 2chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 2chromium) + chromium = (Chromium ion (1+) • 3chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 3chromium) + chromium = (Chromium ion (1+) • 4chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 4chromium) + chromium = (Chromium ion (1+) • 5chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 5chromium) + chromium = (Chromium ion (1+) • 6chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 6chromium) + chromium = (Chromium ion (1+) • 7chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 7chromium) + chromium = (Chromium ion (1+) • 8chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 8chromium) + chromium = (Chromium ion (1+) • 9chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 9chromium) + chromium = (Chromium ion (1+) • 10chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 10chromium) + chromium = (Chromium ion (1+) • 11chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 11chromium) + chromium = (Chromium ion (1+) • 12chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 12chromium) + chromium = (Chromium ion (1+) • 13chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 13chromium) + chromium = (Chromium ion (1+) • 14chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 14chromium) + chromium = (Chromium ion (1+) • 15chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 15chromium) + chromium = (Chromium ion (1+) • 16chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 16chromium) + chromium = (Chromium ion (1+) • 17chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 17chromium) + chromium = (Chromium ion (1+) • 18chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 18chromium) + chromium = (Chromium ion (1+) • 19chromium)

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

Enthalpy of reaction

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

(Chromium ion (1+) • 19chromium) + chromium = (Chromium ion (1+) • 20chromium)

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

Enthalpy of reaction

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

Chromium ion (1+) + Water = (Chromium ion (1+) • Water)

By formula: Cr+ + H2O = (Cr+ • H2O)

Quantity Value Units Method Reference Comment
ΔrH°29. ± 3.kcal/molCIDMagnera, David, et al., 1989gas phase; M
ΔrH°21.9kcal/molCIDMarinelli and Squires, 1989gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
30.8 (+2.2,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • Water) + Water = (Chromium ion (1+) • 2Water)

By formula: (Cr+ • H2O) + H2O = (Cr+ • 2H2O)

Quantity Value Units Method Reference Comment
ΔrH°29.5kcal/molCIDMarinelli and Squires, 1989gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
33.9 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 2Water) + Water = (Chromium ion (1+) • 3Water)

By formula: (Cr+ • 2H2O) + H2O = (Cr+ • 3H2O)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12. (+12.,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

(Chromium ion (1+) • 3Water) + Water = (Chromium ion (1+) • 4Water)

By formula: (Cr+ • 3H2O) + H2O = (Cr+ • 4H2O)

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
12.2 (+1.7,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Chromium ion (1+) + Ammonia = (Chromium ion (1+) • Ammonia)

By formula: Cr+ + H3N = (Cr+ • H3N)

Quantity Value Units Method Reference Comment
ΔrH°43.5 ± 2.4kcal/molCIDTWalter and Armentrout, 1998RCD
ΔrH°37.4kcal/molCIDMarinelli and Squires, 1989gas phase; M

(Chromium ion (1+) • Ammonia) + Ammonia = (Chromium ion (1+) • 2Ammonia)

By formula: (Cr+ • H3N) + H3N = (Cr+ • 2H3N)

Quantity Value Units Method Reference Comment
ΔrH°42.8 ± 2.2kcal/molCIDTWalter and Armentrout, 1998RCD
ΔrH°40.8kcal/molCIDMarinelli and Squires, 1989gas phase; M

(Chromium ion (1+) • 2Ammonia) + Ammonia = (Chromium ion (1+) • 3Ammonia)

By formula: (Cr+ • 2H3N) + H3N = (Cr+ • 3H3N)

Quantity Value Units Method Reference Comment
ΔrH°12.9 ± 1.4kcal/molCIDTWalter and Armentrout, 1998RCD

(Chromium ion (1+) • 3Ammonia) + Ammonia = (Chromium ion (1+) • 4Ammonia)

By formula: (Cr+ • 3H3N) + H3N = (Cr+ • 4H3N)

Quantity Value Units Method Reference Comment
ΔrH°7.2 ± 2.2kcal/molCIDTWalter and Armentrout, 1998RCD

Chromium ion (1+) + helium = (Chromium ion (1+) • helium)

By formula: Cr+ + He = (Cr+ • He)

Quantity Value Units Method Reference Comment
ΔrH°1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°14.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M

Chromium ion (1+) + neon = (Chromium ion (1+) • neon)

By formula: Cr+ + Ne = (Cr+ • Ne)

Quantity Value Units Method Reference Comment
ΔrH°1.6 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.38 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°14.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.38 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K; M

(Chromium ion (1+) • neon) + neon = (Chromium ion (1+) • 2neon)

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

Quantity Value Units Method Reference Comment
ΔrH°0.9 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.90 kcal/mol, ΔrS(100 K) = 6.8 cal/mol*K; M
Quantity Value Units Method Reference Comment
ΔrS°5.7cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.90 kcal/mol, ΔrS(100 K) = 6.8 cal/mol*K; M

References

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

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]

Kemper, Hsu, et al., 1991
Kemper, P.R.; Hsu, M.T.; Bowers, M.T., Transition - Metal Ion - Rare Gas Clusters: Bond Strengths and Molecular Parameters for Co+(He/Ne)n, Ni+(He/Ne)n, and Cr+(He/Ne/Ar), J. Phys. Chem., 1991, 95, 26, 10600, https://doi.org/10.1021/j100179a022 . [all data]

Lin, Chen, et al., 1997
Lin, C.-Y.; Chen, Q.; Chen, H.; Freiser, B.S., Observing Unimolecular Dissociation of Metastable Ions in FT-ICR: A Novel Application of the Continuous Ejection Technique, J. Phys. Chem. A, 1997, 101, 34, 6023, https://doi.org/10.1021/jp970446a . [all data]

Lin and Dunbar, 1997
Lin, C.-Y.; Dunbar, R.C., Radiative Association Kinetics and Binding Energies of Chromium Ions with Benzene and Benzene Derivatives, Organometallics, 1997, 16, 12, 2691, https://doi.org/10.1021/om960949n . [all data]

Meyer, Khan, et al., 1995
Meyer, F.; Khan, F.A.; Armentrout, P.B., Thermochemistry of Transition Metal Benzene complexes: Binding energies of M(C6H6)x+ (x = 1,2) for M = Ti to Cu, J. Am. Chem. Soc., 1995, 117, 38, 9740, https://doi.org/10.1021/ja00143a018 . [all data]

Magnera, David, et al., 1989
Magnera, T.F.; David, D.E.; Michl, J., Gas -Phase Water and Hydroxyl Binding Energies for Monopoisitive First - Row Transition - Metal Ions, J. Am. Chem. Soc., 1989, 111, 11, 4101, https://doi.org/10.1021/ja00193a051 . [all data]

Marinelli and Squires, 1989
Marinelli, P.J.; Squires, R.R., Sequential Solvation of Atomic Transition Metal Ions: The Second Solvent Molecule Can Bind More Strongly than the First, J. Am. Chem. Soc., 1989, 111, 11, 4101, https://doi.org/10.1021/ja00193a052 . [all data]

Sievers, Jarvis, et al., 1998
Sievers, M.R.; Jarvis, L.M.; Armentrout, P.B., Transition Metal Ethene Bonds: Thermochemistry of M+(C2H4)n (M=Ti-Cu, n=1 and 2) Complexes, J. Am. Chem. Soc., 1998, 120, 8, 1891, https://doi.org/10.1021/ja973834z . [all data]

Khan, Clemmer, et al., 1993
Khan, F.A.; Clemmer, D.E.; Schultz, R.H.; Armentrout, P.B., Sequential Bond Energies of Cr(CO)x+, x=1-6, J. Phys. Chem., 1993, 97, 30, 7978, https://doi.org/10.1021/j100132a029 . [all data]

Walter and Armentrout, 1998
Walter, D.; Armentrout, P.B., Periodic Trends in Chemical Reactivity: Reactions of Sc+, Y+, La+, and Lu+ with H2, D2 and HD, J. Am. Chem. Soc., 1998, 120, 13, 3176, https://doi.org/10.1021/ja973202c . [all data]

Rue, Armentrout, et al., 2001
Rue, C.; Armentrout, P.B.; Kretzschmar, I.; Schroeder, D.; Schwarz, H., Guided Ion Beam Studies of the Reactions of the State-Specific Reactions of Cr+ and Mn+ with CS2 and COS, Int. J. Mass Spectrom., 2001, 210/211, 283, https://doi.org/10.1016/S1387-3806(01)00400-6 . [all data]

Rodgers and Armentrout, 2000
Rodgers, M.T.; Armentrout, P.B., Noncovalent Metal-Ligand Bond Energies as Studied by Threshold Collision-Induced Dissociation, Mass Spectrom. Rev., 2000, 19, 4, 215, https://doi.org/10.1002/1098-2787(200007)19:4<215::AID-MAS2>3.0.CO;2-X . [all data]

Ryzhov, 1999
Ryzhov, V., Binding Energies of Chromium Cations with Fluorobenzenes from Radiative Association Kinetics, Int. J. Mass Spectrom., 1999, 185/186/187, 913. [all data]

Fisher and Armentrout, 1992
Fisher, E.R.; Armentrout, P.B., Activation of Alkanes by Cr+: Unique Reactivity of Ground-State Cr+(6S) and Thermochemistry of Neutral and Ionic Chromium-Carbon Bonds, J. Am. Chem. Soc., 1992, 114, 6, 2039, https://doi.org/10.1021/ja00032a017 . [all data]

Georgiadis and Armentrout, 1989
Georgiadis, R.; Armentrout, P.B., Reactions of Ground State Cr+ with C2H6, C2H4, cyclo-C3H6, and cyclo-C2H4O: Bond Energies for CrCHn+ (n= 1-3), Int. J. Mass Spectrom. Ion Proc., 1989, 89, 2-3, 227, https://doi.org/10.1016/0168-1176(89)83062-9 . [all data]

Lin, Chen, et al., 1997, 2
Lin, C.-Y.; Chen, Q.; Chen, H.; Freiser, B.S., Bond Dissociation Energy Determinations for MOC(CH3)2+ and MOC(CD3)2+ (M=Cr, Mn) Using Continuous Ejection and Radiative Association Methods, Int. J. Mass Spectrom. Ion Proc., 1997, 167/168, 713, https://doi.org/10.1016/S0168-1176(97)00131-6 . [all data]

Amunugama and Rodgers, 2001
Amunugama, R.; Rodgers, M.T., Periodic Trends in the Binding of Metal Ions to Pyrimidine Studied by Threshold Collision-Induced Dissociation and Density Functional Theory, J. Phys. Chem. A, 2001, 105, 43, 9883, https://doi.org/10.1021/jp010663i . [all data]

Gapeev and Yang, 2000
Gapeev, A.; Yang, C.-N., Binding Energies of Gas-Phase Ions with Pyrrole. Experimental and Quantum Chemical Results, J. Phys. Chem. A, 2000, 104, 14, 3246, https://doi.org/10.1021/jp992627d . [all data]

Rodgers, Stanley, et al., 2000
Rodgers, M.T.; Stanley, J.R.; Amunugama, R., Periodic Trends in the Binding of Metal Ions to Pyridine Studied by Threshold Collision-Induced Dissociation and Density Functional Theory, J. Am. Chem. Soc., 2000, 122, 44, 10969, https://doi.org/10.1021/ja0027923 . [all data]

Rodgers and Armentrout, 2002
Rodgers, M.T.; Armentrout, P.B., Influence of d orbital occupation on the binding of metal ions to adenine, J. Am. Chem. Soc., 2002, 124, 11, 2678, https://doi.org/10.1021/ja011278+ . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, References