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	hartrees
Energy at 0K	-263.764011
Energy at 298.15K	-263.769814
HF Energy	-262.743332
Nuclear repulsion energy	207.867973

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3247	3090	3.37
2	A₁	3222	3066	0.05
3	A₁	1607	1529	4.72
4	A₁	1483	1411	1.87
5	A₁	1310	1247	0.03
6	A₁	1171	1114	0.08
7	A₁	1094	1041	9.24
8	A₁	997	949	5.68
9	A₁	670	637	2.55
10	A₂	997	948	0.00
11	A₂	941	895	0.00
12	A₂	751	714	0.00
13	A₂	369	351	0.00
14	B₁	979	931	0.02
15	B₁	769	732	42.20
16	B₁	371	353	9.26
17	B₂	3235	3078	10.66
18	B₂	3217	3061	4.03
19	B₂	1605	1527	5.42
20	B₂	1429	1359	14.79
21	B₂	1305	1242	2.76
22	B₂	1087	1034	1.72
23	B₂	1063	1011	0.60
24	B₂	619	589	0.08

Atom	y (Å)	z (Å)
C1	0.692	1.177
C2	-0.692	1.177
C3	-1.322	-0.065
C4	1.322	-0.065
H5	1.255	2.095
H6	-1.255	2.095
H7	-2.396	-0.140
H8	2.396	-0.140
N9	0.657	-1.233
N10	-0.657	-1.233

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3837	2.3658	1.3920	1.0772	2.1522	3.3567	2.1532	2.4093	2.7611
C2	1.3837		1.3920	2.3658	2.1522	1.0772	2.1532	3.3567	2.7611	2.4093
C3	2.3658	1.3920		2.6446	3.3621	2.1607	1.0764	3.7191	2.2984	1.3441
C4	1.3920	2.3658	2.6446		2.1607	3.3621	3.7191	1.0764	1.3441	2.2984
H5	1.0772	2.1522	3.3621	2.1607		2.5090	4.2802	2.5093	3.3808	3.8377
H6	2.1522	1.0772	2.1607	3.3621	2.5090		2.5093	4.2802	3.8377	3.3808
H7	3.3567	2.1532	1.0764	3.7191	4.2802	2.5093		4.7921	3.2430	2.0539
H8	2.1532	3.3567	3.7191	1.0764	2.5093	4.2802	4.7921		2.0539	3.2430
N9	2.4093	2.7611	2.2984	1.3441	3.3808	3.8377	3.2430	2.0539		1.3144
N10	2.7611	2.4093	1.3441	2.2984	3.8377	3.3808	2.0539	3.2430	1.3144

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.931	C1	C2	H6	121.491
C1	C4	H8	120.926	C1	C4	N9	123.409
C2	C1	C4	116.931	C2	C1	H5	121.491
C2	C3	H7	120.926	C2	C3	N10	123.409
C3	C2	H6	121.578	C3	N10	N9	119.660
C4	C1	H5	121.578	C4	N9	N10	119.660
H7	C3	N10	115.665	H8	C4	N9	115.665

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)