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	hartrees
Energy at 0K	-377.114417
Energy at 298.15K	-377.117480
HF Energy	-377.114417
Nuclear repulsion energy	268.123800

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3215	3197	0.00
2	A₁	1786	1776	27.70
3	A₁	1588	1580	3.17
4	A₁	1156	1150	41.28
5	A₁	1040	1035	87.35
6	A₁	788	784	4.23
7	A₁	597	594	0.36
8	A₁	365	363	5.36
9	A₂	988	982	0.00
10	A₂	751	746	0.00
11	A₂	284	283	0.00
12	B₁	856	851	74.86
13	B₁	621	617	0.00
14	B₁	168	167	0.65
15	B₂	3192	3174	0.08
16	B₂	1717	1708	308.99
17	B₂	1309	1302	8.95
18	B₂	958	953	14.93
19	B₂	767	763	61.96
20	B₂	649	645	78.50
21	B₂	517	515	8.28

Atom	y (Å)	z (Å)
O1	0.000	1.013
C2	1.172	0.151
C3	-1.172	0.151
O4	2.311	0.597
O5	-2.311	0.597
C6	0.673	-1.270
C7	-0.673	-1.270
H8	1.355	-2.114
H9	-1.355	-2.114

	O1	C2	C3	O4	O5	C6	C7	H8	H9
O1		1.4550	1.4550	2.3484	2.3484	2.3807	2.3807	3.4081	3.4081
C2	1.4550		2.3437	1.2236	3.5115	1.5064	2.3287	2.2722	3.3932
C3	1.4550	2.3437		3.5115	1.2236	2.3287	1.5064	3.3932	2.2722
O4	2.3484	1.2236	3.5115		4.6224	2.4843	3.5201	2.8746	4.5596
O5	2.3484	3.5115	1.2236	4.6224		3.5201	2.4843	4.5596	2.8746
C6	2.3807	1.5064	2.3287	2.4843	3.5201		1.3456	1.0848	2.1962
C7	2.3807	2.3287	1.5064	3.5201	2.4843	1.3456		2.1962	1.0848
H8	3.4081	2.2722	3.3932	2.8746	4.5596	1.0848	2.1962		2.7099
H9	3.4081	3.3932	2.2722	4.5596	2.8746	2.1962	1.0848	2.7099

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
O1	C2	O4	122.268	O1	C2	C6	107.003
O1	C3	O5	122.268	O1	C3	C7	107.003
C2	O1	C3	107.299	C2	C6	C7	109.347
C2	C6	H8	121.691	C3	C7	C6	109.347
C3	C7	H9	121.691	O4	C2	C6	130.729
O5	C3	C7	130.729	C6	C7	H9	128.962
C7	C6	H8	128.962

All results from a given calculation for (Maleic Anhydride)

using model chemistry: BLYP/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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Number	Element	Mulliken
1	O	-0.434
2	C	0.586
3	C	0.586
4	O	-0.395
5	O	-0.395
6	C	-0.191
7	C	-0.191
8	H	0.217
9	H	0.217

<r²>	178.451
(<r²>)^1/2	13.359