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	hartrees
Energy at 0K	-283.873063
Energy at 298.15K	-283.882548
HF Energy	-283.287446
Nuclear repulsion energy	236.383649

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3602	3427	33.67
2	A	3189	3034	17.57
3	A	3177	3022	10.36
4	A	3139	2987	31.22
5	A	3121	2969	11.08
6	A	3110	2958	9.47
7	A	3067	2918	51.12
8	A	1748	1663	243.54
9	A	1619	1540	7.23
10	A	1584	1507	4.47
11	A	1567	1491	5.31
12	A	1462	1391	11.30
13	A	1408	1339	1.40
14	A	1390	1322	13.10
15	A	1358	1292	0.64
16	A	1302	1239	15.43
17	A	1250	1189	5.37
18	A	1234	1174	148.29
19	A	1226	1166	2.14
20	A	1136	1081	0.90
21	A	1067	1015	15.28
22	A	1004	955	17.28
23	A	941	895	1.44
24	A	920	875	7.72
25	A	890	847	2.72
26	A	804	765	6.09
27	A	686	652	5.40
28	A	649	617	35.51
29	A	579	551	70.31
30	A	514	489	69.32
31	A	462	440	6.71
32	A	208	198	3.42
33	A	148	141	0.56

Atom	x (Å)	y (Å)	z (Å)
N1	0.081	-1.110	-0.038
C2	0.916	-0.001	0.001
C3	-0.014	1.229	0.180
C4	-1.414	0.705	-0.234
C5	-1.360	-0.816	0.134
O6	2.160	-0.011	-0.069
H7	0.464	-2.049	-0.061
H8	0.002	1.526	1.236
H9	0.344	2.063	-0.427
H10	-2.237	1.218	0.269
H11	-1.535	0.802	-1.317
H12	-1.688	-0.978	1.169
H13	-1.973	-1.423	-0.538

	N1	C2	C3	C4	C5	O6	H7	H8	H9	H10	H11	H12	H13
N1		1.3892	2.3517	2.3597	1.4806	2.3519	1.0134	2.9284	3.2078	3.2996	2.8117	2.1458	2.1369
C2	1.3892		1.5529	2.4462	2.4210	1.2461	2.0980	2.1659	2.1843	3.3910	2.8965	3.0171	3.2648
C3	2.3517	1.5529		1.5512	2.4482	2.5161	3.3213	1.0967	1.0916	2.2243	2.1759	2.9417	3.3742
C4	2.3597	2.4462	1.5512		1.5650	3.6492	3.3368	2.1996	2.2297	1.0923	1.0941	2.2081	2.2204
C5	1.4806	2.4210	2.4482	1.5650		3.6164	2.2095	2.9235	3.3913	2.2187	2.1803	1.0981	1.0937
O6	2.3519	1.2461	2.5161	3.6492	3.6164		2.6512	2.9540	2.7807	4.5783	3.9840	4.1569	4.3925
H7	1.0134	2.0980	3.3213	3.3368	2.2095	2.6512		3.8301	4.1294	4.2509	3.7009	2.6999	2.5600
H8	2.9284	2.1659	1.0967	2.1996	2.9235	2.9540	3.8301		1.7809	2.4575	3.0659	3.0213	3.9669
H9	3.2078	2.1843	1.0916	2.2297	3.3913	2.7807	4.1294	1.7809		2.8029	2.4307	3.9906	4.1866
H10	3.2996	3.3910	2.2243	1.0923	2.2187	4.5783	4.2509	2.4575	2.8029		1.7834	2.4361	2.7739
H11	2.8117	2.8965	2.1759	1.0941	2.1803	3.9840	3.7009	3.0659	2.4307	1.7834		3.0618	2.3980
H12	2.1458	3.0171	2.9417	2.2081	1.0981	4.1569	2.6999	3.0213	3.9906	2.4361	3.0618		1.7867
H13	2.1369	3.2648	3.3742	2.2204	1.0937	4.3925	2.5600	3.9669	4.1866	2.7739	2.3980	1.7867

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	C3	105.999	N1	C2	O6	126.290
N1	C5	C4	101.537	N1	C5	H12	111.780
N1	C5	H13	111.330	C2	N1	C5	115.011
C2	N1	H7	120.877	C2	C3	C4	104.006
C2	C3	H8	108.429	C2	C3	H9	110.153
C3	C2	O6	127.698	C3	C4	C5	103.557
C3	C4	H10	113.438	C3	C4	H11	109.472
C4	C3	H8	111.177	C4	C3	H9	113.934
C4	C5	H12	110.803	C4	C5	H13	112.047
C5	N1	H7	123.653	C5	C4	H10	111.993
C5	C4	H11	108.873	H8	C3	H9	108.943
H10	C4	H11	109.310	H12	C5	H13	109.207

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

using model chemistry: MP2/3-21G*

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: MP2/3-21G*

States and conformations

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