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	hartrees
Energy at 0K	-285.337857
Energy at 298.15K	-285.347343
HF Energy	-284.746184
Nuclear repulsion energy	235.962515

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3660	3502	36.93
2	A	3161	3025	25.88
3	A	3147	3011	15.15
4	A	3119	2984	30.74
5	A	3091	2958	17.15
6	A	3085	2952	14.57
7	A	3053	2921	56.76
8	A	1721	1646	316.73
9	A	1604	1535	7.01
10	A	1572	1504	4.79
11	A	1555	1488	4.52
12	A	1474	1410	17.58
13	A	1410	1349	5.65
14	A	1382	1322	4.11
15	A	1355	1297	1.66
16	A	1307	1250	124.90
17	A	1273	1218	35.47
18	A	1250	1196	0.67
19	A	1221	1168	3.88
20	A	1138	1089	1.01
21	A	1089	1042	14.32
22	A	1021	977	17.37
23	A	949	908	1.96
24	A	930	890	3.95
25	A	900	861	3.87
26	A	833	797	2.95
27	A	698	667	2.45
28	A	644	616	36.94
29	A	592	566	112.26
30	A	511	489	50.38
31	A	463	443	9.30
32	A	190	182	2.63
33	A	144	138	0.57

Atom	x (Å)	y (Å)	z (Å)
N1	0.077	-1.113	-0.033
C2	0.908	-0.004	0.001
C3	0.005	1.233	0.147
C4	-1.421	0.714	-0.190
C5	-1.364	-0.820	0.112
O6	2.167	-0.021	-0.058
H7	0.462	-2.048	-0.059
H8	0.074	1.602	1.182
H9	0.350	2.033	-0.518
H10	-2.207	1.212	0.392
H11	-1.636	0.870	-1.256
H12	-1.719	-1.044	1.130
H13	-1.960	-1.404	-0.601

	N1	C2	C3	C4	C5	O6	H7	H8	H9	H10	H11	H12	H13
N1		1.3856	2.3533	2.3676	1.4777	2.3580	1.0121	2.9740	3.1941	3.2863	2.8916	2.1408	2.1346
C2	1.3856		1.5386	2.4448	2.4164	1.2606	2.0928	2.1610	2.1747	3.3667	2.9689	3.0427	3.2474
C3	2.3533	1.5386		1.5544	2.4671	2.5078	3.3190	1.1006	1.0961	2.2254	2.1887	3.0202	3.3723
C4	2.3676	2.4448	1.5544		1.5638	3.6652	3.3456	2.2148	2.2326	1.0969	1.0985	2.2182	2.2239
C5	1.4777	2.4164	2.4671	1.5638		3.6242	2.2075	3.0130	3.3867	2.2170	2.1907	1.1015	1.0975
O6	2.3580	1.2606	2.5078	3.6652	3.6242		2.6489	2.9241	2.7804	4.5667	4.0856	4.1904	4.3863
H7	1.0121	2.0928	3.3190	3.3456	2.2075	2.6489		3.8748	4.1081	4.2372	3.7884	2.6793	2.5639
H8	2.9740	2.1610	1.1006	2.2148	3.0130	2.9241	3.8748		1.7746	2.4455	3.0658	3.1972	4.0439
H9	3.1941	2.1747	1.0961	2.2326	3.3867	2.7804	4.1081	1.7746		2.8355	2.4164	4.0575	4.1418
H10	3.2863	3.3667	2.2254	1.0969	2.2170	4.5667	4.2372	2.4455	2.8355		1.7765	2.4232	2.8089
H11	2.8916	2.9689	2.1887	1.0985	2.1907	4.0856	3.7884	3.0658	2.4164	1.7765		3.0598	2.3891
H12	2.1408	3.0427	3.0202	2.2182	1.1015	4.1904	2.6793	3.1972	4.0575	2.4232	3.0598		1.7841
H13	2.1346	3.2474	3.3723	2.2239	1.0975	4.3863	2.5639	4.0439	4.1418	2.8089	2.3891	1.7841

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	C3	107.060	N1	C2	O6	125.959
N1	C5	C4	102.198	N1	C5	H12	111.376
N1	C5	H13	111.112	C2	N1	C5	115.075
C2	N1	H7	120.794	C2	C3	C4	104.454
C2	C3	H8	108.802	C2	C3	H9	110.128
C3	C2	O6	126.973	C3	C4	C5	104.594
C3	C4	H10	113.012	C3	C4	H11	109.996
C4	C3	H8	111.938	C4	C3	H9	113.650
C4	C5	H12	111.486	C4	C5	H13	112.176
C5	N1	H7	123.838	C5	C4	H10	111.662
C5	C4	H11	109.501	H8	C3	H9	107.774
H10	C4	H11	108.033	H12	C5	H13	108.448

All results from a given calculation for C₄H₇NO (2-Pyrrolidinone)

using model chemistry: MP2/6-31G

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for C4H7NO (2-Pyrrolidinone)

using model chemistry: MP2/6-31G

States and conformations

All results from a given calculation for C₄H₇NO (2-Pyrrolidinone)