CCCBDB listing of experimental data page 2

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Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rCC	1.329	0.012	1	2			1976Hellwege(II/7)
rCF	1.344	0.006	1	3			1976Hellwege(II/7)
rCH	1.080	0.021	1	5			1976Hellwege(II/7)
aCCF	119.3	0.7	1	2	4		1976Hellwege(II/7)
aHCC	129.2	2.7	1	2	6		1976Hellwege(II/7)

Atom	x (Å)	y (Å)
C1	-0.3376	0.5723
C2	0.3376	-0.5723
F3	0.3376	1.7344
F4	-0.3376	-1.7344
H5	-1.4053	0.7350
H6	1.4053	-0.7350

	C1	C2	F3	F4	H5	H6
C1		1.3290	1.3440	2.3067	1.0800	2.1788
C2	1.3290		2.3067	1.3440	2.1788	1.0800
F3	1.3440	2.3067		3.5338	2.0092	2.6903
F4	2.3067	1.3440	3.5338		2.6903	2.0092
H5	1.0800	2.1788	2.0092	2.6903		3.1718
H6	2.1788	1.0800	2.6903	2.0092	3.1718

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	119.300	C1	C2	H6	129.200
C2	C1	F3	119.300	C2	C1	H5	129.200
F3	C1	H5	111.500	F4	C2	H6	111.500

Bond Type	Count
C=C	1
C-F	2
H-C	2

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	¹A_g	C_2h	True							C_2h	0	3

squib	reference	DOI
1976Hellwege(II/7)	Hellwege, KH and AM Hellwege (ed.). Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 7: Structure Data of Free Polyatomic Molecules. Springer-Verlag. Berlin. 1976.
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for C2H2F2 (Ethene, 1,2-difluoro-, (E)-)

Experimental data for C₂H₂F₂ (Ethene, 1,2-difluoro-, (E)-)