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	hartrees
Energy at 0K	-264.211645
Energy at 298.15K	-264.217326
Nuclear repulsion energy	206.159379

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3119	3102	12.50
2	A₁	3088	3071	1.02
3	A₁	1542	1534	5.69
4	A₁	1424	1416	0.70
5	A₁	1161	1154	0.00
6	A₁	1130	1124	0.23
7	A₁	1048	1042	7.39
8	A₁	959	954	7.06
9	A₁	658	654	3.31
10	A₂	987	982	0.00
11	A₂	924	919	0.00
12	A₂	758	753	0.00
13	A₂	356	354	0.00
14	B₁	951	946	0.02
15	B₁	747	743	23.93
16	B₁	350	348	7.71
17	B₂	3105	3087	23.54
18	B₂	3084	3067	14.64
19	B₂	1531	1523	5.07
20	B₂	1388	1381	12.56
21	B₂	1269	1262	2.25
22	B₂	1050	1044	2.75
23	B₂	1024	1019	0.93
24	B₂	611	608	0.13

Atom	y (Å)	z (Å)
C1	0.696	1.188
C2	-0.696	1.188
C3	-1.330	-0.065
C4	1.330	-0.065
H5	1.278	2.111
H6	-1.278	2.111
H7	-2.421	-0.147
H8	2.421	-0.147
N9	0.676	-1.243
N10	-0.676	-1.243

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3917	2.3825	1.4048	1.0915	2.1794	3.3906	2.1813	2.4313	2.7916
C2	1.3917		1.4048	2.3825	2.1794	1.0915	2.1813	3.3906	2.7916	2.4313
C3	2.3825	1.4048		2.6604	3.3974	2.1771	1.0936	3.7519	2.3264	1.3472
C4	1.4048	2.3825	2.6604		2.1771	3.3974	3.7519	1.0936	1.3472	2.3264
H5	1.0915	2.1794	3.3974	2.1771		2.5569	4.3340	2.5306	3.4079	3.8821
H6	2.1794	1.0915	2.1771	3.3974	2.5569		2.5306	4.3340	3.8821	3.4079
H7	3.3906	2.1813	1.0936	3.7519	4.3340	2.5306		4.8416	3.2851	2.0605
H8	2.1813	3.3906	3.7519	1.0936	2.5306	4.3340	4.8416		2.0605	3.2851
N9	2.4313	2.7916	2.3264	1.3472	3.4079	3.8821	3.2851	2.0605		1.3520
N10	2.7916	2.4313	1.3472	2.3264	3.8821	3.4079	2.0605	3.2851	1.3520

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.843	C1	C2	H6	122.260
C1	C4	H8	121.124	C1	C4	N9	124.107
C2	C1	C4	116.843	C2	C1	H5	122.260
C2	C3	H7	121.124	C2	C3	N10	124.107
C3	C2	H6	120.897	C3	N10	N9	119.050
C4	C1	H5	120.897	C4	N9	N10	119.050
H7	C3	N10	114.769	H8	C4	N9	114.769

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: BLYP/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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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	-0.075
2	C	-0.075
3	C	0.061
4	C	0.061
5	H	0.095
6	H	0.095
7	H	0.101
8	H	0.101
9	N	-0.182
10	N	-0.182

<r²>	117.267
(<r²>)^1/2	10.829

All results from a given calculation for C4H4N2 (Pyridazine)

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

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)