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 C₂H₂CO (cyclopropenone)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		4
	Energy 298.15K		0
	Atomization Enthalpy 298.15K		0
	Atomization Enthalpy 0K		0
	Entropy (298.15K)		0
	Entropy at any temperature		0
	Integrated Heat Capacity		0
	Heat Capacity (Cp)		0
	Nuclear Repulsion Energy		4
	HOMO-LUMO Energies		4
	Barriers to Internal Rotation		0
Geometries	Cartesians		4
	Internal Coordinates	x	4	x
	Products of moments of inertia		4
	Rotational Constants		4
	Point Group		4
Vibrations	Vibrational Frequencies		4
	Vibrational Intensities		4
	Zero-point energies		4
	Vibrational scaling factors
	Anharmonic frequencies and constants
	Raman frequencies and intensities		3
Electronic States	Electronic states		0
Electrostatics	Atom charges		4
	Dipole	x	4	x
	Quadrupole	x	4	x
	Polarizability		4
Other results	Spin		0
	Number of basis functions		0
	Conformations		1