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	hartrees
Energy at 0K	-262.747476
Energy at 298.15K	-262.753652
HF Energy	-262.747476
Nuclear repulsion energy	210.981240

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3360	3046	7.01
2	A₁	3335	3023	1.15
3	A₁	1769	1604	7.13
4	A₁	1622	1470	1.11
5	A₁	1273	1154	0.39
6	A₁	1214	1101	6.05
7	A₁	1159	1050	7.46
8	A₁	1036	939	17.46
9	A₁	734	665	5.66
10	A₂	1141	1034	0.00
11	A₂	1052	954	0.00
12	A₂	845	766	0.00
13	A₂	436	395	0.00
14	B₁	1098	995	0.04
15	B₁	851	772	51.72
16	B₁	447	405	9.22
17	B₂	3347	3034	25.82
18	B₂	3328	3017	5.26
19	B₂	1774	1608	1.61
20	B₂	1576	1429	26.80
21	B₂	1436	1302	4.45
22	B₂	1163	1054	2.02
23	B₂	1140	1033	2.37
24	B₂	683	619	0.13

Atom	y (Å)	z (Å)
C1	0.685	1.163
C2	-0.685	1.163
C3	-1.303	-0.069
C4	1.303	-0.069
H5	1.249	2.074
H6	-1.249	2.074
H7	-2.370	-0.156
H8	2.370	-0.156
N9	0.642	-1.211
N10	-0.642	-1.211

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3695	2.3386	1.3785	1.0715	2.1376	3.3270	2.1398	2.3743	2.7195
C2	1.3695		1.3785	2.3386	2.1376	1.0715	2.1398	3.3270	2.7195	2.3743
C3	2.3386	1.3785		2.6060	3.3324	2.1436	1.0700	3.6736	2.2555	1.3193
C4	1.3785	2.3386	2.6060		2.1436	3.3324	3.6736	1.0700	1.3193	2.2555
H5	1.0715	2.1376	3.3324	2.1436		2.4980	4.2505	2.4957	3.3404	3.7902
H6	2.1376	1.0715	2.1436	3.3324	2.4980		2.4957	4.2505	3.7902	3.3404
H7	3.3270	2.1398	1.0700	3.6736	4.2505	2.4957		4.7390	3.1909	2.0240
H8	2.1398	3.3270	3.6736	1.0700	2.4957	4.2505	4.7390		2.0240	3.1909
N9	2.3743	2.7195	2.2555	1.3193	3.3404	3.7902	3.1909	2.0240		1.2841
N10	2.7195	2.3743	1.3193	2.2555	3.7902	3.3404	2.0240	3.1909	1.2841

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.648	C1	C2	H6	121.777
C1	C4	H8	121.318	C1	C4	N9	123.286
C2	C1	C4	116.648	C2	C1	H5	121.777
C2	C3	H7	121.318	C2	C3	N10	123.286
C3	C2	H6	121.575	C3	N10	N9	120.065
C4	C1	H5	121.575	C4	N9	N10	120.065
H7	C3	N10	115.396	H8	C4	N9	115.396

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: HF/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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Number	Element	Mulliken
1	C	-0.071
2	C	-0.071
3	C	0.065
4	C	0.065
5	H	0.105
6	H	0.105
7	H	0.092
8	H	0.092
9	N	-0.192
10	N	-0.192

<r²>	113.501
(<r²>)^1/2	10.654

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: HF/Def2TZVPP

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)