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	hartrees
Energy at 0K	-276.376771
Energy at 298.15K	-276.379172
HF Energy	-275.739225
Nuclear repulsion energy	113.401906

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3362	3132	5.28
2	A₁	1824	1699	52.61
3	A₁	1314	1225	35.32
4	A₁	1047	975	72.95
5	A₁	239	222	2.51
6	A₂	853	795	0.00
7	A₂	501	467	0.00
8	B₁	792	738	48.25
9	B₂	3339	3110	4.52
10	B₂	1440	1342	35.94
11	B₂	1169	1089	109.87
12	B₂	775	722	32.02

Atom	y (Å)	z (Å)
C1	0.665	0.581
C2	-0.665	0.581
F3	1.386	-0.552
F4	-1.386	-0.552
H5	1.248	1.487
H6	-1.248	1.487

	C1	C2	F3	F4	H5	H6
C1		1.3299	1.3433	2.3433	1.0772	2.1166
C2	1.3299		2.3433	1.3433	2.1166	1.0772
F3	1.3433	2.3433		2.7721	2.0436	3.3311
F4	2.3433	1.3433	2.7721		3.3311	2.0436
H5	1.0772	2.1166	2.0436	3.3311		2.4964
H6	2.1166	1.0772	3.3311	2.0436	2.4964

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.466	C1	C2	H6	122.783
C2	C1	F3	122.466	C2	C1	H5	122.783
F3	C1	H5	114.752	F4	C2	H6	114.752

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: MP3=FULL/6-31+G**

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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HF vs MP2 Bad vib. Calc. vs exp. 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All results from a given calculation for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: MP3=FULL/6-31+G**

States and conformations

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (Z)-)