CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)			kJ mol^-1
Hfg(0K)			kJ mol^-1
Entropy (298.15K)			J K^-1 mol^-1
Integrated Heat Capacity (0 to 298.15K)			kJ mol^-1
Heat Capacity (298.15K)	81.30	1.40	J K^-1 mol^-1	webbook

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_g	2995		1966Mil/Mat:173
2	A_g	2079
3	A_g	1430
4	A_g	878
5	A_u	736
6	B_1u	2994
7	B_1u	1608
8	B_1u	1370
9	B_2g	878						assumed under nu4
10	B_2g	544						moved from nu9 moved from nu9
11	B_2u	3080
12	B_2u	1060
13	B_2u	215
14	B_3g	3059
15	B_3g							663 questionable
16	B_3g	330
17	B_3u	854
18	B_3u	215						asssumed from nu13

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Experimental data for H2CCCCH2 (Butatriene)

Experimental data for H₂CCCCH₂ (Butatriene)