Methylidyne
- Formula: CH
- Molecular weight: 13.0186
- IUPAC Standard InChI: InChI=1S/CH/h1H
- IUPAC Standard InChIKey: VRLIPUYDFBXWCH-UHFFFAOYSA-N
- CAS Registry Number: 3315-37-5
- Chemical structure:
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Reaction thermochemistry 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 by: John E. Bartmess
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.
Individual Reactions
(CHCl- • 4294967295) +
= CHCl-
By formula: (CHCl- • 4294967295CH) + CH = CHCl-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 158. ± 9.6 | kJ/mol | CIDT | Jesinger and Squires, 1999 | gas phase |
| ΔrH° | 159. ± 8.4 | kJ/mol | N/A | Gilles, Ervin, et al., 1992 | gas phase; Triplet state is 4.2±2.5 kcal/mol higher in energy than neutral singlet |
+
=
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1529.4 ± 0.71 | kJ/mol | D-EA | Scheer, Bilodeau, et al., 1998 | gas phase; Given: 1.262119(20) eV |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1506.2 ± 1.1 | kJ/mol | H-TS | Scheer, Bilodeau, et al., 1998 | gas phase; Given: 1.262119(20) eV |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Jesinger and Squires, 1999
Jesinger, R.A.; Squires, R.R.,
Carbyne thermochemistry from energy-resolved collision-induced dissociation. The heats of formation of CH, CF, and CCl,
Int. J. Mass Spectrom., 1999, 187, 745-757, https://doi.org/10.1016/S1387-3806(98)14182-9
. [all data]
Gilles, Ervin, et al., 1992
Gilles, M.K.; Ervin, K.M.; Ho, J.; Lineberger, W.C.,
Negative Ion Photoelectron Spectroscopy of HCF-, HCCl-, HCBr-, and HCI- - Photoelectron Angular Distributions and Neutral Triplet Excitation,
J. Phys. Chem., 1992, 96, 3, 1130, https://doi.org/10.1021/j100182a021
. [all data]
Scheer, Bilodeau, et al., 1998
Scheer, M.; Bilodeau, R.C.; Brodie, C.A.; Haugen, H.K.,
Systematic study of the stable states of C-, Si-, Ge-, and Sn- via infrared laser spectroscopy,
Phys. Rev. A, 1998, 58, 4, 2844-2856, https://doi.org/10.1103/PhysRevA.58.2844
. [all data]
Notes
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- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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