CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	-100.42	8.40	kJ mol^-1	JANAF
Hfg(0K)	-101.58	8.40	kJ mol^-1	JANAF
Entropy (298.15K)	211.58		J K^-1 mol^-1	JANAF
Integrated Heat Capacity (0 to 298.15K)	8.72		kJ mol^-1	JANAF
Heat Capacity (298.15K)	29.90		J K^-1 mol^-1	webbook

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	Σ	1230	1242	NISTDiatomic

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rSiO	1.510	0.000	1	2			NISTdiatomic	re

Atom	x (Å)	y (Å)	z (Å)
Si1	0.0000	0.0000	0.0000
O2	0.0000	0.0000	1.5097

	Si1	O2
Si1		1.5097
O2	1.5097

	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	¹Σ	C_∞v	True			3.088	3.088	1970Ray/Mue:3458-3461	MB μ_e (μ₀ = 3.0982)	C_∞v	1	1

squib	reference	DOI
1970Ray/Mue:3458-3461	JW Raymonda, JS Muenter, WA Klemperer "Electric Dipole Moment of SiO and GeO" J. CHEM. PHYS. 52, 3458-3461 (1970)	10.1063/1.1673510
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
2007Iri:389	KK Irikura "Experimental Vibrational Zero-Point Energies: Diatomic Molecules" J. Phys. Chem. Ref. Data 36(2), 389, 2007	10.1063/1.2436891
JANAF	Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.
NISTdiatomic	NIST Diatomic Spectral Database (www.physics.nist.gov/PhysRefData/MolSpec/Diatomic/index.html)	10.18434/T4T59X
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

Vibrational Quantum numbers	Dip total	Squib
0	3.098	NISTDiatomic
1	3.118
2	3.137
3	3.157

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Experimental data for SiO (Silicon monoxide)