CCCBDB listing of experimental data page 2

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Mode Number	Symmetry	Frequency			Intensity			Comment	Description
Mode Number	Symmetry	Fundamental(cm^-1)	Harmonic(cm^-1)	Reference	(km mol^-1)	unc.	Reference	Comment	Description
1	A₁	3023		1960Sch/Ove:1720
2	A₁	1593
3	A₁	1379
4	A₁	467
5	A₁	184
9	B₂	3108						B1 & B2 switched
10	B₂	1065						B1 & B2 switched
11	B₂	696						B1 & B2 switched
12	B₂	322						B1 & B2 switched

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

Atom 1	Atom 2
C1	C2
C1	Br4
C2	H5
C2	H6

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							C_2v	1	2

State	Config	State description	Conf description	Exp. min.	Quadrupole (D Å)			Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	xx	yy	zz	Reference	comment	Point Group	dipole	quadrupole
1	1	¹A₁	C_2v	True						C_2v	1	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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squib	reference	DOI
1960Sch/Ove:1720	JR Scherer, J Overend "Transferability of Urey-Bradley Force Constants. III. The Vinylidene Halides" J. Chem. Phys. 32(4), 1720 (1960)	10.1063/1.1731011
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for C2H2Br2 (1,1-dibromoethene)

Experimental data for C₂H₂Br₂ (1,1-dibromoethene)