CH3I+
- Formula: CH3I+
- Molecular weight: 141.9384
- CAS Registry Number: 12538-72-6
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Vibrational and/or electronic energy levels
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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 by: Marilyn E. Jacox
State: C
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 81200 ± 900 | gas | Potts, Lempka, et al., 1970 | |||||
State: B
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 35180 ± 900 | gas | Potts, Lempka, et al., 1970 | |||||
Ragle, Stenhouse, et al., 1970 | |||||||
Karlsson, Jadrny, et al., 1977 | |||||||
State: A
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 16884 | gas | Potts, Lempka, et al., 1970 | |||||
Ragle, Stenhouse, et al., 1970 | |||||||
Karlsson, Jadrny, et al., 1977 | |||||||
Goss, Morrison, et al., 1981 | |||||||
Goss, McGilvery, et al., 1981 | |||||||
McLoughlin, Morrison, et al., 1985 | |||||||
Woodward, Colson, et al., 1986 | |||||||
Weinkauf, Walter, et al., 1987 | |||||||
Walter, Weinkauf, et al., 1988 | |||||||
Lee and Kim, 2007 | |||||||
Bae and Kim, 2008 | |||||||
Tx = 26800 | Ar | A-X | Andrews, Miller, et al., 1979 | ||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | CH3 stretch | 2810 | gas | PF | Goss, McGilvery, et al., 1981 | |
2 | Umbrella | 1192 | gas | PF | Woodward, Colson, et al., 1986 Weinkauf, Walter, et al., 1987 Walter, Weinkauf, et al., 1988 | ||
3 | CI stretch | 294.2 | gas | PE PF | Karlsson, Jadrny, et al., 1977 Woodward, Colson, et al., 1986 Weinkauf, Walter, et al., 1987 Walter, Weinkauf, et al., 1988 | ||
e | 5 | CH2 scissor | 1394 | gas | TPI | Lee and Kim, 2007 | |
6 | CH3 rock | 1130 | gas | TPI | Lee and Kim, 2007 | ||
State: X
Additional references: Jacox, 1994, page 239; Jacox, 2003, page 260; Bae and Kim, 2008, 2; Grutter, Michaud, et al., 2011
Notes
o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
x | Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state. |
References
Go To: Top, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Potts, Lempka, et al., 1970
Potts, A.W.; Lempka, H.J.; Streets, D.G.; Price, W.C.,
Photoelectron spectra of the halides of elements in groups III, IV, V and VI,
Phil. Trans. Roy. Soc. (London), 1970, A268, 59. [all data]
Ragle, Stenhouse, et al., 1970
Ragle, J.L.; Stenhouse, I.A.; Frost, D.C.; McDowell, C.A.,
Valence-shell ionization potentials of halomethanes by photoelectron spectroscopy. I. CH3Cl, CH3Br, CH3I. Vibrational frequencies and vibronic interaction in CH3Br+ and CH3Cl+,
J. Chem. Phys., 1970, 53, 178. [all data]
Karlsson, Jadrny, et al., 1977
Karlsson, L.; Jadrny, R.; Mattsson, L.; Chau, F.T.; Siegbahn, K.,
Vibrational and Vibronic Structure in the Valence Electron Spectra of CH,
Phys. Scripta, 1977, 16, 5-6, 224, https://doi.org/10.1088/0031-8949/16/5-6/010
. [all data]
Goss, Morrison, et al., 1981
Goss, S.P.; Morrison, J.D.; Smith, D.L.,
A laser-induced photodissociation study of CH3I+ and CD3I+ at high resolution,
J. Chem. Phys., 1981, 75, 2, 757, https://doi.org/10.1063/1.442117
. [all data]
Goss, McGilvery, et al., 1981
Goss, S.P.; McGilvery, D.C.; Morrison, J.D.; Smith, D.L.,
The photodissociation of some alkyl iodide cations,
J. Chem. Phys., 1981, 75, 4, 1820, https://doi.org/10.1063/1.442261
. [all data]
McLoughlin, Morrison, et al., 1985
McLoughlin, R.G.; Morrison, J.D.; Smith, D.L.; Wahrhaftig, A.L.,
Rotational analysis of the A 2E1/2(0,1,7)←X 2E1/2 (0,0,0) transition in CH3I+,
J. Chem. Phys., 1985, 82, 3, 1237, https://doi.org/10.1063/1.448443
. [all data]
Woodward, Colson, et al., 1986
Woodward, A.M.; Colson, S.D.; Chupka, W.A.; White, M.G.,
Vibrational analysis of the ~A-~X photodissociation spectrum of methyl iodide,
J. Phys. Chem., 1986, 90, 2, 173, https://doi.org/10.1021/j100274a014
. [all data]
Weinkauf, Walter, et al., 1987
Weinkauf, R.; Walter, K.; Boesl, U.; Schlag, E.W.,
Mass-selected molecular ion spectra: (1+1)-Photodissociation spectroscopy of CH3I+ and CD3I+,
Chem. Phys. Lett., 1987, 141, 4, 267, https://doi.org/10.1016/0009-2614(87)85022-4
. [all data]
Walter, Weinkauf, et al., 1988
Walter, K.; Weinkauf, R.; Boesl, U.; Schlag, E.W.,
Molecular ion spectroscopy: Mass selected, resonant two-photon dissociation spectra of CH3I+ and CD3I+,
J. Chem. Phys., 1988, 89, 4, 1914, https://doi.org/10.1063/1.455088
. [all data]
Lee and Kim, 2007
Lee, M.; Kim, M.S.,
High resolution spectroscopy for the A [sup 2]A[sub 1] state of CH[sub 3]I[sup +] by mass-analyzed threshold ionization/photodissociation,
J. Chem. Phys., 2007, 127, 12, 124313, https://doi.org/10.1063/1.2778679
. [all data]
Bae and Kim, 2008
Bae, Y.J.; Kim, M.S.,
Rotational state selection of a CH[sub 3]I[sup +] ion beam using vacuum ultraviolet--mass-analyzed threshold ionization spectroscopy: Characterization using photodissociation spectroscopy,
J. Chem. Phys., 2008, 128, 12, 124324, https://doi.org/10.1063/1.2884340
. [all data]
Andrews, Miller, et al., 1979
Andrews, L.; Miller, J.H.; Prochaska, E.S.,
Matrix photoionization of methyl halides. Ultraviolet spectra of the parent cations and infrared evidence for intramolecular hydrogen-bonded parent anions in solid argon,
J. Am. Chem. Soc., 1979, 101, 24, 7158, https://doi.org/10.1021/ja00518a005
. [all data]
Strobel, Fischer, et al., 1994
Strobel, A.; Fischer, I.; Lochschmidt, A.; Muller-Dethlefs, K.; Bondybey, V.E.,
Photodissociation Dynamics of CH3I and CD3I Probed by Zero Kinetic Energy Photoelectron Spectroscopy,
J. Phys. Chem., 1994, 98, 8, 3035, https://doi.org/10.1021/j100059a008
. [all data]
Urban and Bondybey, 2002
Urban, B.; Bondybey, V.E.,
One-color multiphoton threshold photoelectron spectra of methyl bromide, and their comparison with methyl iodide,
J. Chem. Phys., 2002, 116, 12, 4938, https://doi.org/10.1063/1.1447219
. [all data]
Wang, Xing, et al., 2004
Wang, P.; Xing, X.; Lau, K.-C.; Woo, H.K.; Ng, C.Y.,
Rovibrational-state-selected pulsed field ionization-photoelectron study of methyl iodide using two-color infrared-vacuum ultraviolet lasers,
J. Chem. Phys., 2004, 121, 15, 7049, https://doi.org/10.1063/1.1807818
. [all data]
Lee, Bae, et al., 2008
Lee, M.; Bae, Y.J.; Kim, M.S.,
K selection in one-photon mass-analyzed threshold ionization of CH[sub 3]I and CD[sub 3]I to the X [sup 2]E[sub 3«8725»2] state cations,
J. Chem. Phys., 2008, 128, 4, 044310, https://doi.org/10.1063/1.2823032
. [all data]
Xing, Reed, et al., 2008
Xing, X.; Reed, B.; Bahng, M.-K.; Baek, S.-J.; Wang, P.; Ng, C.Y.,
Infrared--vacuum ultraviolet--pulsed field ionization--photoelectron study of CH[sub 3]I[sup +] using a high-resolution infrared laser,
J. Chem. Phys., 2008, 128, 10, 104306, https://doi.org/10.1063/1.2888557
. [all data]
Chau and Karlsson, 1977
Chau, F.T.; Karlsson, L.,
Vibronic Interaction in Molecules and Ions. II.,
Phys. Scripta, 1977, 16, 5-6, 258, https://doi.org/10.1088/0031-8949/16/5-6/014
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Bae and Kim, 2008, 2
Bae, Y.J.; Kim, M.S.,
Photodissociation Spectroscopy of CD,
ChemPhysChem, 2008, 9, 12, 1709, https://doi.org/10.1002/cphc.200800207
. [all data]
Grutter, Michaud, et al., 2011
Grutter, M.; Michaud, J.M.; Merkt, F.,
Photoelectron spectroscopic study of the E«8855»e Jahn--Teller effect in the presence of a tunable spin--orbit interaction. I. Photoionization dynamics of methyl iodide and rotational fine structure of CH3I+ and CD3I+,
J. Chem. Phys., 2011, 134, 5, 054308, https://doi.org/10.1063/1.3547548
. [all data]
Notes
Go To: Top, Vibrational and/or electronic energy levels, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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