CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	-163.07	4.20	kJ mol^-1	Gurvich
Hfg(0K)	-163.20	4.20	kJ mol^-1	Gurvich
Entropy (298.15K)	281.61		J K^-1 mol^-1	Gurvich
Integrated Heat Capacity (0 to 298.15K)	12.53		kJ mol^-1	Gurvich
Heat Capacity (298.15K)	51.27		J K^-1 mol^-1	Gurvich

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	522		VEEL5
2	A₁	201		VEEL5
3	B₂	509		1979HUB/HER

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rSiCl	2.076		1	2			1995Kuchitsu(II/23)
aClSiCl	104.2		2	1	3		1995Kuchitsu(II/23)

Atom	x (Å)	y (Å)
Si1	0.0000	0.0000
Cl2	1.6381	1.2753
Cl3	-1.6381	1.2753

	Si1	Cl2	Cl3
Si1		2.0760	2.0760
Cl2	2.0760		3.2762
Cl3	2.0760	3.2762

	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							C_2v	1	2

squib	reference	DOI
1979HUB/HER	Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Co., 1979	10.1007/978-1-4757-0961-2
1989Tan/Tak:2102	Tanimoto, M.; Takeo, H.; Matsumura, C.; Fujitake, M.; Hirota, E. "Microwave spectroscopic detection of dichlorosilylene SiCl2 in the ground state." Journal of Chemical Physics. 91, 2102-2107 (1989)	10.1063/1.457070
1995Kuchitsu(II/23)	Kuchitsu (ed.), Landolt-Bornstein: Group II: Molecules and Radicals Volume 23: Structure Data for Free Polyatomic Molecules. Springer. Berlin. 1995
Gurvich	Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989
VEEL5	M.E. Jacox, Vibrational and Electronic Energy Levels of Polyatomic Transient Molecules, J. Phys. Chem.Ref. Data, Monograph 3 (1994) (updated data in NIST Chemistry Webbook - http://webbook.nist.gov/chemistry/
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for SiCl2 (Dichlorosilylene)

Experimental data for SiCl₂ (Dichlorosilylene)