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 C₄H₄O⁺ (Furan cation)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		54
	Energy 298.15K		38
	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		53
	HOMO-LUMO Energies		46
	Barriers to Internal Rotation		0
Geometries	Cartesians		55
	Internal Coordinates		55
	Products of moments of inertia		44
	Rotational Constants		46
	Point Group		57
Vibrations	Vibrational Frequencies		44
	Vibrational Intensities		44
	Zero-point energies		44
	Vibrational scaling factors
	Anharmonic frequencies and constants
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		34
	Dipole		42
	Quadrupole		40
	Polarizability		45
Other results	Spin		48
	Number of basis functions		38
	Conformations		1