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 SO₄^-- (sulfate)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		235
	Energy 298.15K		172
	Atomization Enthalpy 298.15K		135
	Atomization Enthalpy 0K		135
	Entropy (298.15K)		161
	Entropy at any temperature		161
	Integrated Heat Capacity		161
	Heat Capacity (Cp)		161
	Nuclear Repulsion Energy		221
	HOMO-LUMO Energies		222
	Barriers to Internal Rotation		0
Geometries	Cartesians		222
	Internal Coordinates		221
	Products of moments of inertia		220
	Rotational Constants		223
	Point Group		225
Vibrations	Vibrational Frequencies		215
	Vibrational Intensities		218
	Zero-point energies		215
	Vibrational scaling factors
	Anharmonic frequencies and constants
	Raman frequencies and intensities		4
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		129
	Dipole		150
	Quadrupole		145
	Polarizability		152
Other results	Spin		0
	Number of basis functions		9
	Conformations		1