Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All data (experiment and calculated) in the CCCBDB for SeO₂ (Selenium dioxide)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		688
	Energy 298.15K		619
	Atomization Enthalpy 298.15K	x	15	x
	Atomization Enthalpy 0K		15
	Entropy (298.15K)	x	4	x
	Entropy at any temperature		4
	Integrated Heat Capacity		4
	Heat Capacity (Cp)	x	4	x
	Nuclear Repulsion Energy		673
	HOMO-LUMO Energies		586
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	664
	Internal Coordinates	x	664	x
	Products of moments of inertia	x	657	x
	Rotational Constants	x	665	x
	Point Group		674
Vibrations	Vibrational Frequencies	fun.	663	x
	Vibrational Intensities		778
	Zero-point energies	x	663	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		54
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		371
	Dipole	x	519	x
	Quadrupole		425
	Polarizability		435
Other results	Spin		0
	Number of basis functions		62
	Conformations		1