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	hartrees
Energy at 0K	-262.671751
Energy at 298.15K	-262.677921
Nuclear repulsion energy	210.042836

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3384	3073	5.09
2	A₁	3362	3052	2.61
3	A₁	1780	1616	8.13
4	A₁	1618	1469	1.19
5	A₁	1263	1147	0.68
6	A₁	1224	1111	5.44
7	A₁	1168	1061	10.37
8	A₁	1062	965	15.97
9	A₁	733	665	5.34
10	A₂	1124	1021	0.00
11	A₂	1041	945	0.00
12	A₂	838	761	0.00
13	A₂	433	393	0.00
14	B₁	1083	984	0.00
15	B₁	842	764	41.91
16	B₁	446	405	9.98
17	B₂	3372	3062	27.44
18	B₂	3352	3044	2.59
19	B₂	1790	1626	1.60
20	B₂	1565	1421	29.33
21	B₂	1424	1293	3.43
22	B₂	1161	1054	0.77
23	B₂	1133	1029	3.14
24	B₂	679	617	0.06

Atom	y (Å)	z (Å)
C1	0.685	1.171
C2	-0.685	1.171
C3	-1.310	-0.077
C4	1.310	-0.077
H5	1.267	2.082
H6	-1.267	2.082
H7	-2.388	-0.163
H8	2.388	-0.163
N9	0.654	-1.213
N10	-0.654	-1.213

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3703	2.3533	1.3956	1.0811	2.1544	3.3507	2.1638	2.3840	2.7340
C2	1.3703		1.3956	2.3533	2.1544	1.0811	2.1638	3.3507	2.7340	2.3840
C3	2.3533	1.3956		2.6202	3.3620	2.1594	1.0816	3.6993	2.2686	1.3120
C4	1.3956	2.3533	2.6202		2.1594	3.3620	3.6993	1.0816	1.3120	2.2686
H5	1.0811	2.1544	3.3620	2.1594		2.5342	4.2901	2.5101	3.3515	3.8139
H6	2.1544	1.0811	2.1594	3.3620	2.5342		2.5101	4.2901	3.8139	3.3515
H7	3.3507	2.1638	1.0816	3.6993	4.2901	2.5101		4.7764	3.2177	2.0272
H8	2.1638	3.3507	3.6993	1.0816	2.5101	4.2901	4.7764		2.0272	3.2177
N9	2.3840	2.7340	2.2686	1.3120	3.3515	3.8139	3.2177	2.0272		1.3073
N10	2.7340	2.3840	1.3120	2.2686	3.8139	3.3515	2.0272	3.2177	1.3073

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.602	C1	C2	H6	122.569
C1	C4	H8	121.210	C1	C4	N9	123.376
C2	C1	C4	116.602	C2	C1	H5	122.569
C2	C3	H7	121.210	C2	C3	N10	123.376
C3	C2	H6	120.829	C3	N10	N9	120.022
C4	C1	H5	120.829	C4	N9	N10	120.022
H7	C3	N10	115.415	H8	C4	N9	115.415

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: HF/cc-pVDZ

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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Number	Element	Mulliken	CHELPG
1	C	-0.045	-0.157
2	C	-0.045	-0.157
3	C	0.141	0.370
4	C	0.141	0.370
5	H	0.043	0.118
6	H	0.043	0.118
7	H	0.049	-0.012
8	H	0.049	-0.012
9	N	-0.188	-0.318
10	N	-0.188	-0.318

<r²>	114.242
(<r²>)^1/2	10.688

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: HF/cc-pVDZ

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)