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	hartrees
Energy at 0K	-43.598528
Energy at 298.15K	-43.604640
Nuclear repulsion energy	106.132959

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3390	3063	10.68
2	A₁	3371	3045	3.58
3	A₁	1757	1587	6.92
4	A₁	1608	1452	0.49
5	A₁	1262	1140	0.42
6	A₁	1206	1090	8.11
7	A₁	1152	1040	8.92
8	A₁	1024	925	16.32
9	A₁	722	653	4.74
10	A₂	1125	1017	0.00
11	A₂	1040	940	0.00
12	A₂	817	738	0.00
13	A₂	425	384	0.00
14	B₁	1080	976	0.01
15	B₁	844	762	58.42
16	B₁	439	397	9.30
17	B₂	3380	3054	44.34
18	B₂	3361	3037	1.76
19	B₂	1760	1590	1.81
20	B₂	1558	1407	26.54
21	B₂	1425	1287	3.61
22	B₂	1148	1037	1.83
23	B₂	1124	1015	1.92
24	B₂	672	607	0.00

Atom	y (Å)	z (Å)
C1	0.687	1.163
C2	-0.687	1.163
C3	-1.316	-0.093
C4	1.316	-0.093
H5	1.269	2.068
H6	-1.269	2.068
H7	-2.389	-0.178
H8	2.389	-0.178
N9	0.660	-1.234
N10	-0.660	-1.234

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3733	2.3636	1.4047	1.0761	2.1546	3.3550	2.1669	2.3968	2.7490
C2	1.3733		1.4047	2.3636	2.1546	1.0761	2.1669	3.3550	2.7490	2.3968
C3	2.3636	1.4047		2.6311	3.3688	2.1618	1.0764	3.7051	2.2810	1.3156
C4	1.4047	2.3636	2.6311		2.1618	3.3688	3.7051	1.0764	1.3156	2.2810
H5	1.0761	2.1546	3.3688	2.1618		2.5372	4.2920	2.5101	3.3575	3.8237
H6	2.1546	1.0761	2.1618	3.3688	2.5372		2.5101	4.2920	3.8237	3.3575
H7	3.3550	2.1669	1.0764	3.7051	4.2920	2.5101		4.7772	3.2260	2.0255
H8	2.1669	3.3550	3.7051	1.0764	2.5101	4.2920	4.7772		2.0255	3.2260
N9	2.3968	2.7490	2.2810	1.3156	3.3575	3.8237	3.2260	2.0255		1.3197
N10	2.7490	2.3968	1.3156	2.2810	3.8237	3.3575	2.0255	3.2260	1.3197

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.597	C1	C2	H6	122.736
C1	C4	H8	121.132	C1	C4	N9	123.508
C2	C1	C4	116.597	C2	C1	H5	122.736
C2	C3	H7	121.132	C2	C3	N10	123.508
C3	C2	H6	120.667	C3	N10	N9	119.896
C4	C1	H5	120.667	C4	N9	N10	119.896
H7	C3	N10	115.361	H8	C4	N9	115.361

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: HF/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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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	-0.131
2	C	-0.131
3	C	-0.308
4	C	-0.308
5	H	0.259
6	H	0.259
7	H	0.213
8	H	0.213
9	N	-0.032
10	N	-0.032

<r²>	93.017
(<r²>)^1/2	9.645

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: HF/CEP-121G*

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)