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	hartrees
Energy at 0K	-262.735166
Energy at 298.15K	-262.741340
Nuclear repulsion energy	210.950767

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3359	3052	6.50
2	A₁	3335	3030	0.95
3	A₁	1767	1606	6.68
4	A₁	1620	1472	1.04
5	A₁	1272	1156	0.42
6	A₁	1214	1103	5.37
7	A₁	1158	1052	8.00
8	A₁	1038	943	16.77
9	A₁	733	666	5.79
10	A₂	1139	1035	0.00
11	A₂	1049	953	0.00
12	A₂	839	762	0.00
13	A₂	433	393	0.00
14	B₁	1095	995	0.04
15	B₁	847	770	51.72
16	B₁	446	405	8.90
17	B₂	3346	3040	24.40
18	B₂	3327	3023	4.06
19	B₂	1770	1609	1.39
20	B₂	1573	1429	26.62
21	B₂	1435	1304	4.42
22	B₂	1160	1054	2.04
23	B₂	1136	1032	2.32
24	B₂	679	617	0.15

Atom	y (Å)	z (Å)
C1	0.682	1.165
C2	-0.682	1.165
C3	-1.307	-0.076
C4	1.307	-0.076
H5	1.257	2.070
H6	-1.257	2.070
H7	-2.377	-0.161
H8	2.377	-0.161
N9	0.652	-1.206
N10	-0.652	-1.206

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3630	2.3446	1.3906	1.0724	2.1396	3.3338	2.1527	2.3718	2.7210
C2	1.3630		1.3906	2.3446	2.1396	1.0724	2.1527	3.3338	2.7210	2.3718
C3	2.3446	1.3906		2.6145	3.3444	2.1470	1.0732	3.6853	2.2620	1.3059
C4	1.3906	2.3446	2.6145		2.1470	3.3444	3.6853	1.0732	1.3059	2.2620
H5	1.0724	2.1396	3.3444	2.1470		2.5150	4.2646	2.4960	3.3316	3.7923
H6	2.1396	1.0724	2.1470	3.3444	2.5150		2.4960	4.2646	3.7923	3.3316
H7	3.3338	2.1527	1.0732	3.6853	4.2646	2.4960		4.7542	3.2048	2.0168
H8	2.1527	3.3338	3.6853	1.0732	2.4960	4.2646	4.7542		2.0168	3.2048
N9	2.3718	2.7210	2.2620	1.3059	3.3316	3.7923	3.2048	2.0168		1.3047
N10	2.7210	2.3718	1.3059	2.2620	3.7923	3.3316	2.0168	3.2048	1.3047

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.742	C1	C2	H6	122.486
C1	C4	H8	121.252	C1	C4	N9	123.159
C2	C1	C4	116.742	C2	C1	H5	122.486
C2	C3	H7	121.252	C2	C3	N10	123.159
C3	C2	H6	120.772	C3	N10	N9	120.099
C4	C1	H5	120.772	C4	N9	N10	120.099
H7	C3	N10	115.589	H8	C4	N9	115.589

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: HF/6-311+G(3df,2p)

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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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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Number	Element	Mulliken
1	C	0.279
2	C	0.279
3	C	0.202
4	C	0.202
5	H	0.131
6	H	0.131
7	H	0.133
8	H	0.133
9	N	-0.745
10	N	-0.745

<r²>	0.000
(<r²>)^1/2	0.000

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: HF/6-311+G(3df,2p)

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)