Phenol, p-tert-butyl-

Formula: C₁₀H₁₄O
Molecular weight: 150.2176
IUPAC Standard InChI: InChI=1S/C10H14O/c1-10(2,3)8-4-6-9(11)7-5-8/h4-7,11H,1-3H3
IUPAC Standard InChIKey: QHPQWRBYOIRBIT-UHFFFAOYSA-N
CAS Registry Number: 98-54-4
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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Other names: Phenol, 4-(1,1-dimethylethyl)-; p-tert-Butylphenol; Butylphen; 4-tert-Butylphenol; 4-t-Butylphenol; 4-(1,1-Dimethylethyl)phenol; p-terc.Butylfenol; 1-Hydroxy-4-tert-butylbenzene; PTBP; Phenol, 4-tert-butyl-; p-t-Butylphenol; NSC 3697
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Gas phase ion energetics data

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Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

Ionization energy determinations

IE (eV)	Method	Reference	Comment
7.8	PE	Cetinkaya, Lappert, et al., 1983	LBLHLM
8.16	PE	Cetinkaya, Lappert, et al., 1983	Vertical value; LBLHLM

De-protonation reactions

C₁₀H₁₃O^- + = Phenol, p-tert-butyl-

By formula: C₁₀H₁₃O^- + H⁺ = C₁₀H₁₄O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	348.5 ± 2.1	kcal/mol	G+TS	Fujio, McIver, et al., 1981	gas phase; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	341.6 ± 2.0	kcal/mol	IMRE	Fujio, McIver, et al., 1981	gas phase; value altered from reference due to change in acidity scale; B

Gas Chromatography

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Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type	Active phase	Temperature (C)	I	Reference	Comment
Capillary	PS-255	150.	1274.	Engewald, Billing, et al., 1988	50. m/0.30 mm/0.25 μm

Kovats' RI, non-polar column, temperature ramp

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Column type	Active phase	I	Reference	Comment
Capillary	SE-30	1256.	Medvedovskaya, Tikhomirova, et al., 1997	7. K/min; T_start: 50. C; T_end: 320. C

Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Column type	Active phase	I	Reference	Comment
Capillary	VF-5MS	1294.7	Mjøs, Meier, et al., 2006	50. m/0.25 mm/0.25 μm, He; Program: 60C(2min) => 30C/min => 100C => 1C/min =>
Capillary	VF-5MS	1295.6	Mjøs, Meier, et al., 2006	50. m/0.25 mm/0.25 μm, He; Program: 60C(2min) => 30C/min => 100C => 2C/min =>
Capillary	VF-5MS	1297.8	Mjøs, Meier, et al., 2006	50. m/0.25 mm/0.25 μm, He; Program: 60C(2min) => 30C/min => 100C => 4C/min =>
Capillary	5 % Phenyl methyl siloxane	1297.	Yasuhara, Shiraishi, et al., 1997	25. m/0.31 mm/0.52 μm, He; Program: 50C(2min) => (20C/min) => 120C => (7C/min) => 310C(10min)

Normal alkane RI, non-polar column, temperature ramp

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Column type	Active phase	I	Reference	Comment
Capillary	HP-5 MS	1292.	Zenkevich, Makarov A.A., et al., 2009	30. m/0.25 mm/0.25 μm, Helium, 2. K/min, 220. C @ 10. min; T_start: 50. C
Capillary	SPB-5	1291.	Poligné, Collignan, et al., 2001	60. m/0.32 mm/1. μm, He, 3. K/min; T_start: 40. C; T_end: 200. C
Capillary	Ultra-1	1265.	Okumura, 1991	25. m/0.32 mm/0.25 μm, He, 3. K/min; T_start: 80. C; T_end: 260. C

Normal alkane RI, non-polar column, custom temperature program

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Column type	Active phase	I	Reference	Comment
Capillary	CP Sil 5 CB	1261.	Guyot, Bouseta, et al., 1998	50. m/0.32 mm/1.2 μm, He; Program: 30C => 55C/min => 85C => 1C/min => 145C => 3C/min => 250C

References

Go To: Top, Gas phase ion energetics data, Gas Chromatography, Notes

Cetinkaya, Lappert, et al., 1983
Cetinkaya, B.; Lappert, M.F.; Suffolk, R.J., Photoelectron spectra of some sterically hindered phenols and related compounds, J. Chem. Res. Synop., 1983, 316. [all data]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [all data]

Engewald, Billing, et al., 1988
Engewald, W.; Billing, U.; Topalova, I.; Petsev, N., Structure-retention correlations of alkylphenols in gas-liquid and gas-solid chromatography, J. Chromatogr., 1988, 446, 71-77, https://doi.org/10.1016/S0021-9673(00)94419-4 . [all data]

Medvedovskaya, Tikhomirova, et al., 1997
Medvedovskaya, I.I.; Tikhomirova, S.V.; Krasavina, T.D.; Gubkina, L.N., Comparison of results of chromatographic identification of complex mixtures of organic compounds, Proc. Omsk. Univ., 1997, 4, 34-36. [all data]

Mjøs, Meier, et al., 2006
Mjøs, S.A.; Meier, S.; Boitsov, S., Alkylphenol retention indices, J. Chromatogr. A, 2006, 1123, 1, 98-105, https://doi.org/10.1016/j.chroma.2006.05.002 . [all data]

Yasuhara, Shiraishi, et al., 1997
Yasuhara, A.; Shiraishi, H.; Nishikawa, M.; Yamamoto, T.; Uehiro, T.; Nakasugi, O.; Okumura, T.; Kenmotsu, K.; Fukui, H.; Nagase, M.; Ono, Y.; Kawagoshi, Y.; Baba, K.; Noma, Y., Determination of organic components in leachates from hazardous waste disposal sites in Japan by gas chromatography-mass spectrometry, J. Chromatogr. A, 1997, 774, 1-2, 321-332, https://doi.org/10.1016/S0021-9673(97)00078-2 . [all data]

Zenkevich, Makarov A.A., et al., 2009
Zenkevich, I.G.; Makarov A.A.; Schrader, S.; Moeder, M., A new version of an additive scheme for the prediction of gas chromatographic retention indices of the 211 structural isomers of 4-nonylphenol, J. Chromatogr. A, 2009, 1216, 18, 4097-4106, https://doi.org/10.1016/j.chroma.2009.03.021 . [all data]

Poligné, Collignan, et al., 2001
Poligné, I.; Collignan, A.; Trystram, G., Characterization of traditional processing of pork meat into boucané, Meat Sci., 2001, 59, 4, 377-389, https://doi.org/10.1016/S0309-1740(01)00090-0 . [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]

Guyot, Bouseta, et al., 1998
Guyot, C.; Bouseta, A.; Scheirman, V.; Collin, S., Floral origin markers of chestnut and lime tree honeys, J. Agric. Food Chem., 1998, 46, 2, 625-633, https://doi.org/10.1021/jf970510l . [all data]

Notes

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Symbols used in this document:

Δ_rG° Free energy of reaction at standard conditions

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions