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	hartrees
Energy at 0K	-307.743717
Energy at 298.15K	-307.753006
HF Energy	-307.743717
Nuclear repulsion energy	237.791291

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3723	3583	52.25
2	A	3135	3017	29.01
3	A	3118	3001	37.85
4	A	3112	2996	38.34
5	A	3087	2972	0.07
6	A	3062	2947	26.17
7	A	3048	2934	9.42
8	A	3038	2925	32.49
9	A	1802	1734	355.25
10	A	1526	1469	5.93
11	A	1519	1462	8.15
12	A	1513	1456	1.19
13	A	1493	1437	5.25
14	A	1428	1374	1.71
15	A	1381	1329	11.79
16	A	1358	1307	64.22
17	A	1327	1277	8.93
18	A	1294	1245	7.35
19	A	1257	1210	4.12
20	A	1196	1151	128.35
21	A	1112	1070	6.30
22	A	1073	1033	111.83
23	A	1043	1004	5.68
24	A	915	881	1.56
25	A	887	854	2.35
26	A	867	834	10.96
27	A	750	722	8.01
28	A	719	692	40.87
29	A	620	597	78.60
30	A	566	545	45.90
31	A	417	401	3.16
32	A	323	311	1.20
33	A	242	233	0.04
34	A	181	174	0.09
35	A	91	88	0.32
36	A	28	27	0.43

All results from a given calculation for C₄H₈O₂ (Butanoic acid)

using model chemistry: TPSSh/6-31+G**

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 C4H8O2 (Butanoic acid)

using model chemistry: TPSSh/6-31+G**

States and conformations

All results from a given calculation for C₄H₈O₂ (Butanoic acid)