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	hartrees
Energy at 0K	-44.028094
Energy at 298.15K	-44.022556
HF Energy	-43.451365
Nuclear repulsion energy	102.053612

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3178	3102	8.72
2	A₁	3158	3082	7.02
3	A₁	1541	1504	4.98
4	A₁	1412	1378	7.40
5	A₁	1181	1153	0.24
6	A₁	1136	1109	1.24
7	A₁	1015	990	3.28
8	A₁	846	826	3.07
9	A₁	649	634	0.87
10	A₂	837	817	0.00
11	A₂	788	769	0.00
12	A₂	383	374	0.00
13	A₂	286i	279i	0.00
14	B₁	803	783	0.58
15	B₁	726	709	59.77
16	B₁	346	337	9.56
17	B₂	3169	3093	32.76
18	B₂	3144	3069	0.14
19	B₂	1519	1483	5.57
20	B₂	1393	1359	13.52
21	B₂	1254	1224	2.34
22	B₂	1054	1029	1.68
23	B₂	1007	983	0.53
24	B₂	608	593	0.13

Atom	y (Å)	z (Å)
C1	0.709	1.199
C2	-0.709	1.199
C3	-1.369	-0.073
C4	1.369	-0.073
H5	1.287	2.125
H6	-1.287	2.125
H7	-2.457	-0.159
H8	2.457	-0.159
N9	0.711	-1.294
N10	-0.711	-1.294

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.4177	2.4365	1.4331	1.0920	2.2003	3.4451	2.2139	2.4928	2.8690
C2	1.4177		1.4331	2.4365	2.2003	1.0920	2.2139	3.4451	2.8690	2.4928
C3	2.4365	1.4331		2.7388	3.4480	2.1998	1.0914	3.8277	2.4126	1.3871
C4	1.4331	2.4365	2.7388		2.1998	3.4480	3.8277	1.0914	1.3871	2.4126
H5	1.0920	2.2003	3.4480	2.1998		2.5739	4.3862	2.5668	3.4674	3.9604
H6	2.2003	1.0920	2.1998	3.4480	2.5739		2.5668	4.3862	3.9604	3.4674
H7	3.4451	2.2139	1.0914	3.8277	4.3862	2.5668		4.9147	3.3658	2.0824
H8	2.2139	3.4451	3.8277	1.0914	2.5668	4.3862	4.9147		2.0824	3.3658
N9	2.4928	2.8690	2.4126	1.3871	3.4674	3.9604	3.3658	2.0824		1.4227
N10	2.8690	2.4928	1.3871	2.4126	3.9604	3.4674	2.0824	3.3658	1.4227

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	117.448	C1	C2	H6	121.966
C1	C4	H8	121.977	C1	C4	N9	124.231
C2	C1	C4	117.448	C2	C1	H5	121.966
C2	C3	H7	121.977	C2	C3	N10	124.231
C3	C2	H6	120.586	C3	N10	N9	118.321
C4	C1	H5	120.586	C4	N9	N10	118.321
H7	C3	N10	113.792	H8	C4	N9	113.792

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: MP2/CEP-121G

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/CEP-121G

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)