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	1.324	0.005	1	2			1976Hellwege(II/7)
rCH	1.089	0.005	1	5			1976Hellwege(II/7)
rCF	1.335	0.005	1	3			1976Hellwege(II/7)
aCCF	122.1	0.3	1	2	4		1976Hellwege(II/7)
aHCC	124	0.5	1	2	6		1976Hellwege(II/7)

Atom	y (Å)	z (Å)
C1	0.6619	0.6428
C2	-0.6619	0.6428
F3	1.3714	-0.4880
F4	-1.3714	-0.4880
H5	1.2691	1.5465
H6	-1.2691	-1.5465

	C1	C2	F3	F4	H5	H6
C1		1.3238	1.3350	2.3266	1.0887	2.9192
C2	1.3238		2.3266	1.3350	2.1320	2.2719
F3	1.3350	2.3266		2.7428	2.0371	2.8448
F4	2.3266	1.3350	2.7428		3.3334	1.0634
H5	1.0887	2.1320	2.0371	3.3334		4.0011
H6	2.9192	2.2719	2.8448	1.0634	4.0011

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.105	C1	C2	H6	105.501
C2	C1	F3	122.105	C2	C1	H5	123.897
F3	C1	H5	113.997	F4	C2	H6	16.604

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	¹A₁	C_2v	True				2.420	1961Lau:291	microwave	C_2v	1	2

squib	reference	DOI
1961Lau:291	VW Laurie "Microwave Spectrum of cis-Difluoroethylene. Structures and Dipole Moment of Fluoroethylenes" J. Chem. Phys. 34, 291, 1961	10.1063/1.1731582
1971Fly/Ben:225	WH Flygare, RC Benson "The molecular Zeeman effect in diamagnetic molecules and the determination of molecular magnetic moments (g values), magnetic susceptibilities, and molecular quadrupole moments" Mol. Phys. 1971, 20 (2), 225-250	10.1080/00268977100100221
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-, (Z)-)

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