CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	-197.38	3.05	kJ mol^-1	webbook
Hfg(0K)		3.05	kJ mol^-1	webbook
Entropy (298.15K)			J K^-1 mol^-1
Integrated Heat Capacity (0 to 298.15K)			kJ mol^-1

Bond Type	Count
H-C	6
C-C	3
C-N	2
H-N	1
C=O	1

Atom 1	Atom 2
N1	C2
N1	C5
N1	H7
C2	C3
C2	O6
C3	C4
C3	H8
C3	H9
C4	C5
C4	H10
C4	H11
C5	H12
C5	H13

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	¹A	C₁	True							C₁	3	5

State	Config	State description	Conf description	Exp. min.	Quadrupole (D Å)			Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	xx	yy	zz	Reference	comment	Point Group	dipole	quadrupole
1	1	¹A	C₁	True						C₁	3	5

	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 C4H7NO (2-Pyrrolidinone)

Experimental data for C₄H₇NO (2-Pyrrolidinone)