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	hartrees
Energy at 0K	-286.086699
Energy at 298.15K	-286.096177
HF Energy	-284.992484
Nuclear repulsion energy	240.526950

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3660	3482	45.61
2	A	3185	3031	11.11
3	A	3175	3021	11.93
4	A	3144	2991	24.85
5	A	3111	2960	15.82
6	A	3099	2949	7.96
7	A	3059	2910	54.02
8	A	1799	1712	431.04
9	A	1548	1473	3.58
10	A	1506	1433	7.83
11	A	1476	1405	4.16
12	A	1450	1379	40.25
13	A	1372	1305	7.01
14	A	1347	1281	17.58
15	A	1313	1249	46.26
16	A	1276	1214	48.41
17	A	1260	1198	24.47
18	A	1215	1157	1.76
19	A	1196	1138	4.75
20	A	1099	1046	6.33
21	A	1094	1041	9.71
22	A	1017	967	11.16
23	A	942	897	0.58
24	A	918	873	2.55
25	A	904	860	5.32
26	A	827	787	3.91
27	A	694	660	9.03
28	A	637	606	13.71
29	A	559	532	41.22
30	A	496	472	64.05
31	A	470	447	9.56
32	A	213	203	4.83
33	A	145	138	1.41

Atom	x (Å)	y (Å)	z (Å)
N1	0.080	-1.091	-0.085
C2	0.897	0.002	0.001
C3	-0.011	1.213	0.149
C4	-1.399	0.687	-0.206
C5	-1.321	-0.804	0.146
O6	2.114	-0.011	-0.045
H7	0.479	-2.014	-0.030
H8	0.049	1.540	1.187
H9	0.338	2.028	-0.479
H10	-2.206	1.190	0.321
H11	-1.572	0.791	-1.276
H12	-1.600	-0.982	1.188
H13	-1.959	-1.414	-0.490

	N1	C2	C3	C4	C5	O6	H7	H8	H9	H10	H11	H12	H13
N1		1.3672	2.3182	2.3168	1.4486	2.3033	1.0064	2.9234	3.1546	3.2552	2.7730	2.1112	2.1035
C2	1.3672		1.5214	2.4058	2.3642	1.2178	2.0582	2.1201	2.1563	3.3382	2.8896	2.9352	3.2250
C3	2.3182	1.5214		1.5266	2.4055	2.4601	3.2687	1.0907	1.0861	2.2017	2.1552	2.9029	3.3322
C4	2.3168	2.4058	1.5266		1.5349	3.5860	3.2948	2.1838	2.2113	1.0867	1.0882	2.1844	2.1928
C5	1.4486	2.3642	2.4055	1.5349		3.5304	2.1755	2.9084	3.3413	2.1893	2.1519	1.0929	1.0879
O6	2.3033	1.2178	2.4601	3.5860	3.5304		2.5851	2.8617	2.7388	4.4987	3.9681	4.0325	4.3305
H7	1.0064	2.0582	3.2687	3.2948	2.1755	2.5851		3.7811	4.0689	4.1949	3.6912	2.6212	2.5524
H8	2.9234	2.1201	1.0907	2.1838	2.9084	2.8617	3.7811		1.7601	2.4410	3.0427	3.0143	3.9463
H9	3.1546	2.1563	1.0861	2.2113	3.3413	2.7388	4.0689	1.7601		2.7949	2.4111	3.9493	4.1377
H10	3.2552	3.3382	2.2017	1.0867	2.1893	4.4987	4.1949	2.4410	2.7949		1.7636	2.4163	2.7387
H11	2.7730	2.8896	2.1552	1.0882	2.1519	3.9681	3.6912	3.0427	2.4111	1.7636		3.0354	2.3723
H12	2.1112	2.9352	2.9029	2.1844	1.0929	4.0325	2.6212	3.0143	3.9493	2.4163	3.0354		1.7689
H13	2.1035	3.2250	3.3322	2.1928	1.0879	4.3305	2.5524	3.9463	4.1377	2.7387	2.3723	1.7689

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	C3	106.621	N1	C2	O6	125.906
N1	C5	C4	101.852	N1	C5	H12	111.575
N1	C5	H13	111.265	C2	N1	C5	114.174
C2	N1	H7	119.480	C2	C3	C4	104.238
C2	C3	H8	107.368	C2	C3	H9	110.462
C3	C2	O6	127.470	C3	C4	C5	103.570
C3	C4	H10	113.737	C3	C4	H11	109.883
C4	C3	H8	112.026	C4	C3	H9	114.588
C4	C5	H12	111.348	C4	C5	H13	112.335
C5	N1	H7	123.784	C5	C4	H10	112.114
C5	C4	H11	109.049	H8	C3	H9	107.920
H10	C4	H11	108.364	H12	C5	H13	108.418

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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP

States and conformations

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