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	hartrees
Energy at 0K	-263.648824
Energy at 298.15K	-263.654641
HF Energy	-262.670934
Nuclear repulsion energy	207.592893

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3265	3084	2.24
2	A₁	3238	3058	0.10
3	A₁	1605	1516	6.49
4	A₁	1483	1401	2.48
5	A₁	1326	1252	0.01
6	A₁	1175	1109	0.09
7	A₁	1098	1037	8.90
8	A₁	1002	946	5.36
9	A₁	668	631	3.05
10	A₂	1016	959	0.00
11	A₂	956	903	0.00
12	A₂	766	723	0.00
13	A₂	370	350	0.00
14	B₁	988	933	0.01
15	B₁	776	733	31.84
16	B₁	371	351	9.11
17	B₂	3252	3072	7.39
18	B₂	3234	3054	5.24
19	B₂	1604	1515	6.25
20	B₂	1427	1348	15.97
21	B₂	1311	1238	2.92
22	B₂	1087	1027	2.12
23	B₂	1060	1001	1.43
24	B₂	616	582	0.12

Atom	y (Å)	z (Å)
C1	0.692	1.181
C2	-0.692	1.181
C3	-1.320	-0.064
C4	1.320	-0.064
H5	1.271	2.096
H6	-1.271	2.096
H7	-2.401	-0.149
H8	2.401	-0.149
N9	0.670	-1.236
N10	-0.670	-1.236

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3842	2.3658	1.3942	1.0830	2.1661	3.3669	2.1655	2.4170	2.7742
C2	1.3842		1.3942	2.3658	2.1661	1.0830	2.1655	3.3669	2.7742	2.4170
C3	2.3658	1.3942		2.6394	3.3732	2.1606	1.0845	3.7215	2.3091	1.3401
C4	1.3942	2.3658	2.6394		2.1606	3.3732	3.7215	1.0845	1.3401	2.3091
H5	1.0830	2.1661	3.3732	2.1606		2.5424	4.3042	2.5136	3.3859	3.8562
H6	2.1661	1.0830	2.1606	3.3732	2.5424		2.5136	4.3042	3.8562	3.3859
H7	3.3669	2.1655	1.0845	3.7215	4.3042	2.5136		4.8017	3.2573	2.0438
H8	2.1655	3.3669	3.7215	1.0845	2.5136	4.3042	4.8017		2.0438	3.2573
N9	2.4170	2.7742	2.3091	1.3401	3.3859	3.8562	3.2573	2.0438		1.3398
N10	2.7742	2.4170	1.3401	2.3091	3.8562	3.3859	2.0438	3.2573	1.3398

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.753	C1	C2	H6	122.325
C1	C4	H8	121.267	C1	C4	N9	124.240
C2	C1	C4	116.753	C2	C1	H5	122.325
C2	C3	H7	121.267	C2	C3	N10	124.240
C3	C2	H6	120.922	C3	N10	N9	119.007
C4	C1	H5	120.922	C4	N9	N10	119.007
H7	C3	N10	114.493	H8	C4	N9	114.493

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: MP2/6-31G(2df,p)

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 C4H4N2 (Pyridazine)

using model chemistry: MP2/6-31G(2df,p)

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)