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 anion)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		547
	Energy 298.15K		20
	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		54
	HOMO-LUMO Energies		0
	Barriers to Internal Rotation		0
Geometries	Cartesians		1
	Internal Coordinates		0
	Products of moments of inertia		0
	Rotational Constants		0
	Point Group		526
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	482
Electrostatics	Atom charges		40
	Dipole		76
	Quadrupole		320
	Polarizability		71
Other results	Spin		524
	Number of basis functions		154
	Conformations		1