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 C (Carbon atom)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K	x
	Energy 0K		1899
	Energy 298.15K		117
	Atomization Enthalpy 298.15K	x	0	x
	Atomization Enthalpy 0K		0
	Entropy (298.15K)	x	74	x
	Entropy at any temperature		74
	Integrated Heat Capacity	x	74	x
	Heat Capacity (Cp)	x	74	x
	Nuclear Repulsion Energy		41
	HOMO-LUMO Energies		50
	Barriers to Internal Rotation		0
Geometries	Cartesians		0
	Internal Coordinates		0
	Products of moments of inertia		0
	Rotational Constants		0
	Point Group		1779
Vibrations	Vibrational Frequencies		0
	Vibrational Intensities		0
	Zero-point energies	x	0	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		0
Electronic States	Electronic states	x	745
Electrostatics	Atom charges		60
	Dipole	x	86	x
	Quadrupole		566
	Polarizability	x	28	x
Other results	Spin		1048
	Number of basis functions		154
	Conformations		1