Dibromomethylene
- Formula: CBr2
- Molecular weight: 171.819
- IUPAC Standard InChI: InChI=1S/CBr2/c2-1-3
- IUPAC Standard InChIKey: WNLFIUJNNYMFIZ-UHFFFAOYSA-N
- CAS Registry Number: 4371-77-1
- Chemical structure:
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Gas phase ion energetics 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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to CBr2+ (ion structure unspecified)
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.78 ± 0.10 | LPES | Wren, Vogelhuber, et al., 2009 | Schwartz, Davico, et al., 1999 contaminated with HCBr2-. Here, Vertical Detachment Energy = 2.25 eV; Triplet >3 kcal/mol up, but uncertain; B |
| 1.928 ± 0.082 | IMRB | Born, Ingemann, et al., 2000 | B |
| 1.880 ± 0.070 | LPES | Schwartz, Davico, et al., 1999 | triplet 2±3 kcal/mol up from singlet; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.11 ± 0.09 | EI | Reed and Snedden, 1958 | RDSH |
References
Go To: Top, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wren, Vogelhuber, et al., 2009
Wren, S.W.; Vogelhuber, K.M.; Ervin, K.M.; Lineberger, W.C.,
The photoelectron spectrum of CCl2-: the convergence of theory and experiment after a decade of debate,
Phys. Chem. Chem. Phys., 2009, 11, 23, 4745-4753, https://doi.org/10.1039/b822690c
. [all data]
Schwartz, Davico, et al., 1999
Schwartz, R.L.; Davico, G.E.; Ramond, T.M.; Lineberger, W.C.,
Singlet-triplet splittings in CX2 (X = F, Cl, Br, I) dihalocarbenes via negative ion photoelectron spectroscopy,
J. Phys. Chem. A, 1999, 103, 41, 8213-8221, https://doi.org/10.1021/jp992214c
. [all data]
Born, Ingemann, et al., 2000
Born, M.; Ingemann, S.; Nibbering, N.M.M.,
Thermochemical properties of halogen-substituted methanes, methyl radicals, and carbenes in the gas phase,
Int. J. Mass Spectrom., 2000, 194, 2-3, 103-113, https://doi.org/10.1016/S1387-3806(99)00125-6
. [all data]
Reed and Snedden, 1958
Reed, R.I.; Snedden, W.,
Studies in electron impact methods. Part 2. The latent heat of sublimation of carbon,
J. Chem. Soc. Faraday Trans., 1958, 54, 301. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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