CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	120.90	1.70	kJ mol^-1	1994Ber/Ell:2744
Hfg(0K)	131.80	1.70	kJ mol^-1	1994Ber/Ell:2744
Entropy (298.15K)	250.52		J K^-1 mol^-1	Gurvich
Integrated Heat Capacity (0 to 298.15K)	11.81		kJ mol^-1	Gurvich
Heat Capacity (298.15K)	46.60		J K^-1 mol^-1	Gurvich

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	A'	3033		VEEL5
2	A'	2842		VEEL5
5	A'	1440		VEEL5
6	A'	1366		VEEL5
7	A'	1138		VEEL5
9	A'	528		VEEL5
10	A"	3112		VEEL5
11	A"	2987		VEEL5
12	A"	1440		VEEL5
13	A"	1175		VEEL5

Bond Type	Count
H-C	5
C-C	1

Atom 1	Atom 2
C1	C2
C1	H3
C1	H4
C1	H5
C2	H6
C2	H7

State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	²A^'	C_s	True							C_s	2	3

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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squib	reference	DOI
1994Ber/Ell:2744	J Berkowitz, GB Ellison, D Gutman "Three Methods To Measure RH Bond Energies" J. Phys. Chem. 1994, 98, 2744-2765	10.1021/j100062a009
Gurvich	Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989
VEEL5	M.E. Jacox, Vibrational and Electronic Energy Levels of Polyatomic Transient Molecules, J. Phys. Chem.Ref. Data, Monograph 3 (1994) (updated data in NIST Chemistry Webbook - http://webbook.nist.gov/chemistry/
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for C2H5+ (Ethyl cation)

Experimental data for C₂H₅⁺ (Ethyl cation)