CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	595.80	0.60	kJ mol^-1	2005Rus/Bog:573
Hfg(0K)	592.50	0.60	kJ mol^-1	2005Rus/Bog:573
Entropy (298.15K)	183.04		J K^-1 mol^-1	2005Rus/Bog:573
Integrated Heat Capacity (0 to 298.15K)	8.63		kJ mol^-1	2005Rus/Bog:573
Heat Capacity (298.15K)	29.17		J K^-1 mol^-1	2005Rus/Bog:573

Mode Number	Symmetry	Frequency			Intensity			Comment	Description
Mode Number	Symmetry	Fundamental(cm^-1)	Harmonic(cm^-1)	Reference	(km mol^-1)	unc.	Reference	Comment	Description
1	Σ	2733	2861	2007Iri:389

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rCH	1.120		1	2			1979HUB/HER	re

Atom	x (Å)	y (Å)	z (Å)
C1	0.0000	0.0000	0.0000
H2	0.0000	0.0000	1.1199

	C1	H2
C1		1.1199
H2	1.1199

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Energy (cm^-1)	Degeneracy	reference	description
0	2	1979HUB/HER	²Π_1/2
27.95	2	1979HUB/HER	²Π_3/2
5844	4	1979HUB/HER	⁴Σ^-
23189.8	4	1979HUB/HER	²Δ

Experimental data for CH+ (Methylidyne cation)

Experimental data for CH⁺ (Methylidyne cation)