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	hartrees
Energy at 0K	-51.806699
Energy at 298.15K	-51.816063
HF Energy	-51.281731
Nuclear repulsion energy	126.138498

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3659	3536	35.33
2	A	3160	3053	68.99
3	A	3144	3038	17.40
4	A	3118	3013	35.59
5	A	3076	2973	33.05
6	A	3068	2965	37.78
7	A	3042	2939	86.14
8	A	1663	1607	361.28
9	A	1556	1504	3.24
10	A	1529	1477	7.43
11	A	1511	1460	6.00
12	A	1449	1400	13.02
13	A	1391	1344	6.91
14	A	1362	1316	3.09
15	A	1337	1292	11.02
16	A	1289	1245	155.51
17	A	1255	1213	14.92
18	A	1238	1196	1.78
19	A	1199	1159	2.95
20	A	1123	1085	1.60
21	A	1088	1051	13.44
22	A	1011	977	19.72
23	A	933	902	1.68
24	A	918	887	2.33
25	A	876	846	4.98
26	A	824	797	3.26
27	A	682	659	3.24
28	A	631	610	89.97
29	A	600	580	83.72
30	A	513	496	28.36
31	A	444	429	9.73
32	A	171	165	2.27
33	A	127	122	1.37

Atom	x (Å)	y (Å)	z (Å)
N1	0.102	-1.128	-0.042
C2	0.944	-0.001	0.001
C3	0.025	1.257	0.129
C4	-1.430	0.723	-0.174
C5	-1.360	-0.839	0.109
O6	2.225	-0.025	-0.048
H7	0.495	-2.070	-0.064
H8	0.117	1.662	1.159
H9	0.361	2.037	-0.583
H10	-2.198	1.209	0.462
H11	-1.690	0.899	-1.238
H12	-1.713	-1.086	1.134
H13	-1.951	-1.423	-0.627

	N1	C2	C3	C4	C5	O6	H7	H8	H9	H10	H11	H12	H13
N1		1.4072	2.3919	2.4059	1.4981	2.3917	1.0210	3.0373	3.2208	3.3173	2.9580	2.1636	2.1548
C2	1.4072		1.5632	2.4881	2.4542	1.2817	2.1181	2.1891	2.1987	3.3984	3.0469	3.0862	3.2857
C3	2.3919	1.5632		1.5790	2.5119	2.5524	3.3652	1.1110	1.1080	2.2480	2.2218	3.0861	3.4139
C4	2.4059	2.4881	1.5790		1.5882	3.7325	3.3934	2.2473	2.2586	1.1094	1.1098	2.2505	2.2540
C5	1.4981	2.4542	2.5119	1.5882		3.6792	2.2330	3.0883	3.4218	2.2405	2.2231	1.1128	1.1094
O6	2.3917	1.2817	2.5524	3.7325	3.6792		2.6782	2.9579	2.8308	4.6198	4.1946	4.2463	4.4409
H7	1.0210	2.1181	3.3652	3.3934	2.2330	2.6782		3.9453	4.1416	4.2752	3.8687	2.6976	2.5914
H8	3.0373	2.1891	1.1110	2.2473	3.0883	2.9579	3.9453		1.7985	2.4590	3.0971	3.3020	4.1207
H9	3.2208	2.1987	1.1080	2.2586	3.4218	2.8308	4.1416	1.7985		2.8851	2.4350	4.1238	4.1612
H10	3.3173	3.3984	2.2480	1.1094	2.2405	4.6198	4.2752	2.4590	2.8851		1.8016	2.4405	2.8592
H11	2.9580	3.0469	2.2218	1.1098	2.2231	4.1946	3.8687	3.0971	2.4350	1.8016		3.0939	2.4155
H12	2.1636	3.0862	3.0861	2.2505	1.1128	4.2463	2.6976	3.3020	4.1238	2.4405	3.0939		1.8085
H13	2.1548	3.2857	3.4139	2.2540	1.1094	4.4409	2.5914	4.1207	4.1612	2.8592	2.4155	1.8085

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	C3	107.148	N1	C2	O6	125.549
N1	C5	C4	102.397	N1	C5	H12	111.064
N1	C5	H13	110.567	C2	N1	C5	115.247
C2	N1	H7	120.626	C2	C3	C4	104.713
C2	C3	H8	108.706	C2	C3	H9	109.615
C3	C2	O6	127.301	C3	C4	C5	104.952
C3	C4	H10	112.307	C3	C4	H11	110.223
C4	C3	H8	112.152	C4	C3	H9	113.239
C4	C5	H12	111.647	C4	C5	H13	112.127
C5	N1	H7	123.744	C5	C4	H10	111.070
C5	C4	H11	109.697	H8	C3	H9	108.287
H10	C4	H11	108.552	H12	C5	H13	108.943

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

using model chemistry: MP2/CEP-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/CEP-31G

States and conformations

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