UV/Vis+ Photochemistry Database

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UV/Vis+ Photochemistry Database

Literature Service: Aliphatic Radicals

Substances: CH2, CH3, C2H5, C2H, H2CC, C2H3, C3H3, C3H5, i-C3H7, C4H5

The relevant Spectral Data, graphical representations, links to abstracts and other photochemical data & information are available for registered users, see Subscription

Please note: The substance groups are only a rough classification. To search for a specific substance please use the Search Tool or see the CAS-list.

Substances unsorted, use your browser capabilities to search this site or use our Search Tool to search the database.

Authors Journal/Source Title/Paper Data Sheet
CH2; methylene radical; CAS-No.: 2465-56-7
M.J. Pilling, A.M. Bass, W. Braun Chem. Phys. Lett., 9 (2), 147-148, (1971) Oscillator strengths of CH2 and CH3 in the vacuum ultraviolet

CH3; methyl radical; CAS-No.: 2229-07-4
G. Herzberg, J. Shoosmith Can. J. Physics, 34, 523-525, (1956) Absorption spectrum of free CH3 and CD3 radicals

M.J. Pilling, A.M. Bass, W. Braun Chem. Phys. Lett., 9 (2), 147-148, (1971) Oscillator strengths of CH2 and CH3 in the vacuum ultraviolet

G.C. Stevens, R.M. Clarke, E.J. Hart J. Phys. Chem., 76 (25), 3863-3867, (1972) Radiolysis of aqueous methane solutions

B. Hickel J. Phys. Chem., 79 (11), 1054-1059, (1975) Absorption spectra and kinetics of methyl and ethyl radicals in water

M. T. Macpherson, M. J. Pilling, M. J. C. Smith J. Phys. Chem., 89 (11), 2268-2274, (1985) Determination of the absorption cross section for methyl at 216.36 nm and the absolute rate constant for methyl radical recombination over the temperature range 296-577 K

N. Nakashima, K. Yoshihara Laser Chem., 7, 177-196, (1987) Oscillator Strengths of the Ultraviolet Bands of Hot and Relaxed Methallyl, Allyl, and Methyl Radicals

M. Cameron, V. Sivakumaran, T. J. Dillon, J. N. Crowley Phys. Chem. Chem. Phys., 4, 3628 - 3638, (2002) Reaction between OH and CH3CHO Part 1. Primary product yields of CH3(296 K), CH3CO (296 K), and H (237-296 K)

S. Y. Grebenkin, L. N. Krasnoperov J. Phys. Chem. A, 108 (11), 1953-1963, (2004) Kinetics and Thermochemistry of the Hydroxycyclohexadienyl Radical Reaction with O2: C6H6OH + O2 <--> C6H6(OH)OO

M.A. Oehlschlaeger, D.F. Davidson, R.K. Hanson J. Quant. Spectr. Rad. Transfer, 92, 393-402, (2005) High-temperature UV absorption of methyl radicals behind shock waves

V. Khamaganov, R. Karunanandan, A. Rodriguez, J. N. Crowley Phys. Chem. Chem. Phys., 9, 4098 - 4113, (2007) Photolysis of CH3C(O)CH3 (248 nm, 266 nm), CH3C(O)C2H5 (248 nm) and CH3C(O)Br (248 nm): pressure dependent quantum yields of CH3 formation

C.A. Taatjes, D.L. Osborn, T.M. Selby, G. Meloni, H. Fan, S.T. Pratt J. Phys. Chem. A, 112 (39), 9336-9343, (2009) Absolute photoionization cross-section of the methyl radical

J.-C. Loison J. Phys. Chem. A, 114 (23), 6515-6520, (2010) Absolute Photoionization Cross Section of the Methyl Radical

C2H5; ethyl radical; CAS-No.: 2025-56-1
G.C. Stevens, R.M. Clarke, E.J. Hart J. Phys. Chem., 76 (25), 3863-3867, (1972) Radiolysis of aqueous methane solutions

B. Hickel J. Phys. Chem., 79 (11), 1054-1059, (1975) Absorption spectra and kinetics of methyl and ethyl radicals in water

H. Adachi, N. Basco, D.G.L. James Int. J. Chem. Kinet., 11, 1211-1229, (1979) The ethylperoxy radical spectrum and rate constant for mutual interaction measured by flash photolysis and kinetic spectroscopy

V. Khamaganov, R. Karunanandan, A. Rodriguez, J. N. Crowley Phys. Chem. Chem. Phys., 9, 4098 - 4113, (2007) Photolysis of CH3C(O)CH3 (248 nm, 266 nm), CH3C(O)C2H5 (248 nm) and CH3C(O)Br (248 nm): pressure dependent quantum yields of CH3 formation

B.L. FitzPatrick, M. Maienschein-Cline, L. J. Butler, S.-H. Lee, J.J. Lin J. Phys. Chem. A, 111 (49), 12417-12422, (2007) Determining the Partial Photoionization Cross-Sections of Ethyl Radicals

B. Gans, G. A. Garcia, S. Boye-Peronne, J.-C. Loison, S. Douin, F. Gaie-Levrel, D. Gauyacq J. Phys. Chem. A, 115 (21), 5387-5396, (2011) Absolute Photoionization Cross Section of the Ethyl Radical in the Range 8–11.5 eV: Synchrotron and Vacuum Ultraviolet Laser Measurements

related data (quantum yield studies; photolysis studies, etc.)
J. Pacansky, H. Coufal J. Chem. Phys., 71, 2811, (1979) Photochemical studies on the ethyl radical

C2H; ethynyl radical; CAS-No.: 2122-48-7
A. Fahr J. Molecular Spectroscopy, 217, 249-254, (2003) Ultraviolet absorptionnext term spectrum and cross-sections of ethynyl (C2H) radicals

related data (quantum yield studies; photolysis studies, etc.)
E. Some, F. Remy, D. Macauhercot, I. Dubois, J. Breton, H. Bredohl J. Mol. Spectroscopy, 173, 44-48, (1995) The Near UV Emission Spectrum of C2

H2CC; vinylidene radical; CAS-No.: 2143-69-3
A. Fahr, A.H. Laufer J. Chem. Phys., 83, 908-910, (1985) Extinction coefficient of H2CC (3B2) at 137 nm

C2H3; vinyl radical; CAS-No.: 2669-89-8
H.E. Hunziker, H. Kneppe, A.D. McLean, P. Siegbahn, H.R. Wendt Can. J. Chemistry, 61, 993-995, (1983) Visible electronic absorption spectrum of vinyl radical

A. Fahr, A.H. Laufer J. Phys. Chem., 92,1229-1232, (1988) Ultraviolet Absorption of the Vinyl Radical and Reaction with Oxygen

A. Fahr, P. Hassanzadeh, D.B. Atkinson Chem. Phys., 236, 43-51, (1998) Ultraviolet absorption spectrum and cross-sections of vinyl (C2H3) radical in the 225 - 238 nm region

K. Tonokura, S. Marui, M. Koshi Chem. Phys. Lett., 313, 771-776, (1999) Absorption cross-section measurements of the vinyl radical in the 440–460 nm region by cavity ring-down spectroscopy

J. D. DeSain, L. E. Jusinski, C. A. Taatjes Phys. Chem. Chem. Phys., 8, 2240 - 2248, (2006) Ultraviolet photochemistry of trichlorovinylsilane and allyltrichlorosilane: vinyl radical (HCCH2) and allyl radical (H2CCHCH2) production in 193 nm photolysis

related data (quantum yield studies; photolysis studies, etc.)
M. Ahmed, D.S. Peterka, A.G. Suits J. Chem. Phys., 110, 4248-4253, (1999) The photodissociation of the vinyl radical (C2H3) at 243 nm studied by velocity map imaging

C3H3; propargyl radical; CAS-No.: 2932-78-7
D.A. Ramsay, P. Thistlethwaite Can. J. Phys./Rev. can. phys., 44(7), 1381-1386, (1966) The electronic absorption spectrum of the propargyl radical

M. E. Jacox, D. E. Milligan Chem. Phys., 4, 45-61, (1974) Matrix isolation study of the vacuum ultraviolet photolysis of allene and methylacetylene. Vibrational and electronic spectra of the species C3, C3H, C3H2, and C3H3

A. Fahr, P. Hassanzadeh, B. Laszlo, R.E. Huie Chem. Phys., 215, 59-66, (1997) Ultraviolet absorption and cross sections of propargyl (C3H3) radicals in the 230-300 nm region

D. B. Atkinson, J. W. Hudgens J. Phys. Chem. A, 103 (21), 4242–4252, (1999) Rate Coefficients for the Propargyl Radical Self-Reaction and Oxygen Addition Reaction Measured Using Ultraviolet Cavity Ring-down Spectroscopy

related data (quantum yield studies; photolysis studies, etc.)
H.-J. Deyerl, I. Fischer, P. Chen J. Chem. Phys., 111, 3441, (1999) Photodissociation dynamics of the propargyl radical

Xianfeng Zheng, Yu Song, Jingsong Zhang J. Phys. Chem. A, 113, 4604–4612, (2009) Ultraviolet Photodissociation Dynamics of the Propargyl Radical

C3H5; CH2CH=CH2; allyl radical; CAS-No.: 1981-80-2
N. Nakashima, K. Yoshihara Laser Chem., 7, 177-196, (1987) Oscillator Strengths of the Ultraviolet Bands of Hot and Relaxed Methallyl, Allyl, and Methyl Radicals

M.E. Jenkin, T.P. Murrells, S.J. Shalliker, G.D. Hayman J. Chem. Soc. Faraday Trans., 89, 433-446, (1993) Kinetics and product study of the self-reactions of allyl and allyl peroxy radicals at 296 K

K. Tonokura, M. Koshi J. Phys. Chem. A, 104, 8456-8461, (2000) Absorption spectrum and cross sections of the allyl radical measured using cavity ring-down spectroscopy: The à <-- X band

F. Bayrakçeken, S. Aktas, A. Ünlügedik, I. Karaaslan Spectrochim. Acta A, 59, 1663-1666, (2003) High resolution electronic absorption and extinction coefficients of the allyl radical

J.D. DeSain, L.E. Jusinski, C.A. Taatjes Phys. Chem. Chem. Phys., 8, 2240-2248, (2006) Ultraviolet photochemistry of trichlorovinylsilane and allyltrichlorosilane: vinyl radical (HCCH2) and allyl radical (H2CCHCH2) production in 193 nm photolysis

i-C3H7; i-propyl radical; CAS-No.: 2025-55-0; PubChem: CID 137284
J. Munk, P. Pagsberg, E. Ratajczak, A. Sillesen Chem. Phys. Lett., 132, 417-421, (1986) Spectrokinetic studies of i-C3H7 and i-C3H7O2 radicals

related data (quantum yield studies; photolysis studies, etc.)
G. Chettur, A. Snelson J. Phys. Chem., 91, 913-919, (1987) Alkylperoxy and alkyl radicals. 3. Infrared spectra and ultraviolet photolysis of i-C3H7O2 and i-C3H7 radicals in Argon + Oxygen matrices

C4H5; 2-butyn-1-yl radical; 2-butynyl; CAS-No.: 82252-88-8; PubChem: CID 144982
H.R. Hrodmarsson, J.-C. Loison, U. Jacovella, D.M.P. Holland, S. Boyé-Péronne, B. Gans, G.A. Garcia, L. Nahon, S.T. Pratt J. Phys. Chem. A, 123 (8), 1521–1528, (2019) Valence-Shell Photoionization of C4H5: The 2-Butyn-1-yl Radical