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	hartrees
Energy at 0K	-264.184310
Energy at 298.15K	-264.190112
Nuclear repulsion energy	207.999441

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3231	3091	7.66
2	A₁	3206	3067	1.45
3	A₁	1636	1565	6.24
4	A₁	1499	1434	1.19
5	A₁	1228	1175	0.15
6	A₁	1183	1132	0.06
7	A₁	1110	1062	13.34
8	A₁	1031	986	7.23
9	A₁	681	651	2.84
10	A₂	1018	974	0.00
11	A₂	946	905	0.00
12	A₂	771	738	0.00
13	A₂	371	355	0.00
14	B₁	980	937	0.00
15	B₁	763	730	36.96
16	B₁	373	356	8.90
17	B₂	3218	3079	24.02
18	B₂	3201	3062	8.67
19	B₂	1633	1562	3.69
20	B₂	1452	1389	18.76
21	B₂	1325	1268	2.08
22	B₂	1095	1048	0.82
23	B₂	1054	1008	1.55
24	B₂	629	602	0.00

Atom	y (Å)	z (Å)
C1	0.691	1.179
C2	-0.691	1.179
C3	-1.320	-0.068
C4	1.320	-0.068
H5	1.272	2.098
H6	-1.272	2.098
H7	-2.404	-0.155
H8	2.404	-0.155
N9	0.665	-1.230
N10	-0.665	-1.230

	C1	C2	C3	C4	H5	H6	H7	H8	N9	N10
C1		1.3827	2.3663	1.3966	1.0864	2.1671	3.3704	2.1708	2.4094	2.7647
C2	1.3827		1.3966	2.3663	2.1671	1.0864	2.1708	3.3704	2.7647	2.4094
C3	2.3663	1.3966		2.6393	3.3771	2.1662	1.0878	3.7246	2.2997	1.3338
C4	1.3966	2.3663	2.6393		2.1662	3.3771	3.7246	1.0878	1.3338	2.2997
H5	1.0864	2.1671	3.3771	2.1662		2.5431	4.3107	2.5209	3.3825	3.8501
H6	2.1671	1.0864	2.1662	3.3771	2.5431		2.5209	4.3107	3.8501	3.3825
H7	3.3704	2.1708	1.0878	3.7246	4.3107	2.5209		4.8079	3.2518	2.0447
H8	2.1708	3.3704	3.7246	1.0878	2.5209	4.3107	4.8079		2.0447	3.2518
N9	2.4094	2.7647	2.2997	1.3338	3.3825	3.8501	3.2518	2.0447		1.3298
N10	2.7647	2.4094	1.3338	2.2997	3.8501	3.3825	2.0447	3.2518	1.3298

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	116.738	C1	C2	H6	122.282
C1	C4	H8	121.304	C1	C4	N9	123.863
C2	C1	C4	116.738	C2	C1	H5	122.282
C2	C3	H7	121.304	C2	C3	N10	123.863
C3	C2	H6	120.980	C3	N10	N9	119.399
C4	C1	H5	120.980	C4	N9	N10	119.399
H7	C3	N10	114.834	H8	C4	N9	114.834

All results from a given calculation for C₄H₄N₂ (Pyridazine)

using model chemistry: B3PW91/6-31G*

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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Number	Element	Mulliken	ESP
1	C	-0.151	-0.205
2	C	-0.151	-0.205
3	C	0.017	0.383
4	C	0.017	0.383
5	H	0.189	0.143
6	H	0.189	0.143
7	H	0.190	-0.006
8	H	0.190	-0.006
9	N	-0.245	-0.316
10	N	-0.245	-0.316

<r²>	115.483
(<r²>)^1/2	10.746

All results from a given calculation for C4H4N2 (Pyridazine)

using model chemistry: B3PW91/6-31G*

States and conformations

All results from a given calculation for C₄H₄N₂ (Pyridazine)