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 H₃O⁺ (hydronium cation)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		536
	Energy 298.15K		28
	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		519
	HOMO-LUMO Energies		466
	Barriers to Internal Rotation		0
Geometries	Cartesians		517
	Internal Coordinates	x	516	x
	Products of moments of inertia		521
	Rotational Constants		531
	Point Group		532
Vibrations	Vibrational Frequencies	fun.	513	x
	Vibrational Intensities		653
	Zero-point energies	x	513	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		307
	Dipole		379
	Quadrupole		309
	Polarizability		361
Other results	Spin		0
	Number of basis functions		30
	Conformations		1