CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	-457.73	10.00	kJ mol^-1	Gurvich
Hfg(0K)	-460.00	10.00	kJ mol^-1	Gurvich
Entropy (298.15K)	249.66		J K^-1 mol^-1	Gurvich
Integrated Heat Capacity (0 to 298.15K)	13.40		kJ mol^-1	Gurvich
Heat Capacity (298.15K)	60.27		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	Σ_g	2060		1984Rus/Cur:3962
2	Σ_g	585		1984Rus/Cur:3962
3	Σ_u	1898		1984Rus/Cur:3962
4	Π_g	410		1984Rus/Cur:3962
5	Π_u	213		1984Rus/Cur:3962

Bond Type	Count
B-B	1
B=O	2

Atom 1	Atom 2
B1	B2
B1	O3
B2	O4

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_g	D_∞h	True				0.000	NSRDS-NBS10		D_∞h	0	1

	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
1984Rus/Cur:3962	Ruscic, B., Curtis, L., Berkowitz, J., Photoelectron spectrum and structure of B2O2, J. Chem Phys., Vol. 80, No. 9, pgs. 3962-3968	10.1063/1.447278
Gurvich	Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989
NSRDS-NBS10	R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967	10.6028/NBS.NSRDS.10
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for B2O2 (Diboron dioxide)

Experimental data for B₂O₂ (Diboron dioxide)