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	hartrees
Energy at 0K	-283.883453
Energy at 298.15K	-283.892941
HF Energy	-283.287505
Nuclear repulsion energy	236.421868

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3603	3416	33.76
2	A	3190	3024	17.45
3	A	3178	3013	10.30
4	A	3140	2977	31.10
5	A	3122	2959	11.05
6	A	3110	2948	9.41
7	A	3068	2908	51.01
8	A	1748	1658	243.67
9	A	1619	1535	7.18
10	A	1584	1502	4.51
11	A	1567	1485	5.35
12	A	1462	1386	11.31
13	A	1408	1335	1.43
14	A	1390	1318	13.14
15	A	1358	1288	0.65
16	A	1303	1235	15.59
17	A	1250	1185	5.41
18	A	1235	1171	148.09
19	A	1226	1163	2.03
20	A	1136	1077	0.90
21	A	1067	1012	15.31
22	A	1004	952	17.25
23	A	941	892	1.45
24	A	920	872	7.70
25	A	891	844	2.73
26	A	805	763	6.10
27	A	686	650	5.49
28	A	649	616	35.97
29	A	580	550	70.66
30	A	514	487	68.37
31	A	463	439	6.70
32	A	209	198	3.37
33	A	148	140	0.54

Atom	x (Å)	y (Å)	z (Å)
N1	0.081	-1.110	-0.037
C2	0.916	-0.001	0.001
C3	-0.014	1.229	0.180
C4	-1.414	0.704	-0.234
C5	-1.359	-0.815	0.134
O6	2.160	-0.011	-0.069
H7	0.463	-2.048	-0.061
H8	0.001	1.525	1.236
H9	0.344	2.063	-0.427
H10	-2.237	1.218	0.268
H11	-1.533	0.802	-1.317
H12	-1.688	-0.978	1.169
H13	-1.972	-1.423	-0.538

	N1	C2	C3	C4	C5	O6	H7	H8	H9	H10	H11	H12	H13
N1		1.3890	2.3513	2.3592	1.4803	2.3517	1.0133	2.9275	3.2076	3.2992	2.8109	2.1454	2.1366
C2	1.3890		1.5526	2.4456	2.4205	1.2460	2.0978	2.1656	2.1839	3.3905	2.8954	3.0166	3.2643
C3	2.3513	1.5526		1.5509	2.4476	2.5158	3.3208	1.0966	1.0914	2.2240	2.1755	2.9409	3.3737
C4	2.3592	2.4456	1.5509		1.5647	3.6485	3.3363	2.1992	2.2294	1.0922	1.0939	2.2077	2.2201
C5	1.4803	2.4205	2.4476	1.5647		3.6158	2.2093	2.9225	3.3909	2.2184	2.1799	1.0980	1.0936
O6	2.3517	1.2460	2.5158	3.6485	3.6158		2.6509	2.9539	2.7802	4.5777	3.9826	4.1564	4.3919
H7	1.0133	2.0978	3.3208	3.3363	2.2093	2.6509		3.8293	4.1290	4.2505	3.6997	2.7000	2.5596
H8	2.9275	2.1656	1.0966	2.1992	2.9225	2.9539	3.8293		1.7807	2.4574	3.0655	3.0198	3.9659
H9	3.2076	2.1839	1.0914	2.2294	3.3909	2.7802	4.1290	1.7807		2.8024	2.4305	3.9897	4.1864
H10	3.2992	3.3905	2.2240	1.0922	2.2184	4.5777	4.2505	2.4574	2.8024		1.7832	2.4358	2.7733
H11	2.8109	2.8954	2.1755	1.0939	2.1799	3.9826	3.6997	3.0655	2.4305	1.7832		3.0614	2.3978
H12	2.1454	3.0166	2.9409	2.2077	1.0980	4.1564	2.7000	3.0198	3.9897	2.4358	3.0614		1.7864
H13	2.1366	3.2643	3.3737	2.2201	1.0936	4.3919	2.5596	3.9659	4.1864	2.7733	2.3978	1.7864

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	C3	105.999	N1	C2	O6	126.288
N1	C5	C4	101.537	N1	C5	H12	111.781
N1	C5	H13	111.337	C2	N1	C5	115.006
C2	N1	H7	120.877	C2	C3	C4	103.997
C2	C3	H8	108.430	C2	C3	H9	110.156
C3	C2	O6	127.700	C3	C4	C5	103.553
C3	C4	H10	113.446	C3	C4	H11	109.468
C4	C3	H8	111.174	C4	C3	H9	113.941
C4	C5	H12	110.799	C4	C5	H13	112.050
C5	N1	H7	123.665	C5	C4	H10	111.998
C5	C4	H11	108.870	H8	C3	H9	108.943
H10	C4	H11	109.309	H12	C5	H13	109.203

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

using model chemistry: MP2=FULL/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=FULL/3-21G*

States and conformations

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