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	hartrees
Energy at 0K	-264.203700
Energy at 298.15K	-264.209351
Nuclear repulsion energy	205.657862

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3128	3104	12.23
2	A₁	3101	3077	2.00
3	A₁	1555	1543	5.10
4	A₁	1432	1421	0.65
5	A₁	1159	1150	0.00
6	A₁	1132	1123	0.23
7	A₁	1051	1043	7.06
8	A₁	957	950	8.47
9	A₁	660	655	2.60
10	A₂	979	971	0.00
11	A₂	912	905	0.00
12	A₂	740	734	0.00
13	A₂	353	350	0.00
14	B₁	941	934	0.00
15	B₁	737	731	24.90
16	B₁	348	345	7.98
17	B₂	3114	3090	28.80
18	B₂	3096	3073	12.88
19	B₂	1546	1534	4.48
20	B₂	1395	1384	12.47
21	B₂	1268	1258	1.78
22	B₂	1052	1044	2.00
23	B₂	1021	1013	0.83
24	B₂	613	608	0.02

Atom	y (Å)	z (Å)
C1	0.697	1.191
C2	-0.697	1.191
C3	-1.334	-0.065
C4	1.334	-0.065
H5	1.280	2.115
H6	-1.280	2.115
H7	-2.425	-0.147
H8	2.425	-0.147
N9	0.678	-1.246
N10	-0.678	-1.246

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3949	2.3880	1.4074	1.0927	2.1826	3.3970	2.1849	2.4369	2.7984
C2	1.3949		1.4074	2.3880	2.1826	1.0927	2.1849	3.3970	2.7984	2.4369
C3	2.3880	1.4074		2.6681	3.4034	2.1806	1.0944	3.7603	2.3337	1.3514
C4	1.4074	2.3880	2.6681		2.1806	3.4034	3.7603	1.0944	1.3514	2.3337
H5	1.0927	2.1826	3.4034	2.1806		2.5591	4.3408	2.5356	3.4149	3.8902
H6	2.1826	1.0927	2.1806	3.4034	2.5591		2.5356	4.3408	3.8902	3.4149
H7	3.3970	2.1849	1.0944	3.7603	4.3408	2.5356		4.8507	3.2927	2.0643
H8	2.1849	3.3970	3.7603	1.0944	2.5356	4.3408	4.8507		2.0643	3.2927
N9	2.4369	2.7984	2.3337	1.3514	3.4149	3.8902	3.2927	2.0643		1.3567
N10	2.7984	2.4369	1.3514	2.3337	3.8902	3.4149	2.0643	3.2927	1.3567

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.893	C1	C2	H6	122.193
C1	C4	H8	121.191	C1	C4	N9	124.080
C2	C1	C4	116.893	C2	C1	H5	122.193
C2	C3	H7	121.191	C2	C3	N10	124.080
C3	C2	H6	120.914	C3	N10	N9	119.026
C4	C1	H5	120.914	C4	N9	N10	119.026
H7	C3	N10	114.729	H8	C4	N9	114.729

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: BLYP/6-31G**

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	-0.039
2	C	-0.039
3	C	0.105
4	C	0.105
5	H	0.083
6	H	0.083
7	H	0.093
8	H	0.093
9	N	-0.242
10	N	-0.242

<r²>	117.778
(<r²>)^1/2	10.853

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: BLYP/6-31G**

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)