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 CH^- (methylidyne anion)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		99
	Energy 298.15K		86
	Atomization Enthalpy 298.15K		2
	Atomization Enthalpy 0K		15
	Entropy (298.15K)		14
	Entropy at any temperature		14
	Integrated Heat Capacity		14
	Heat Capacity (Cp)		14
	Nuclear Repulsion Energy		84
	HOMO-LUMO Energies		87
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	91
	Internal Coordinates		91
	Products of moments of inertia		82
	Rotational Constants		85
	Point Group		88
Vibrations	Vibrational Frequencies		86
	Vibrational Intensities		270
	Zero-point energies		86
	Vibrational scaling factors
	Anharmonic frequencies and constants
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		49
	Dipole		70
	Quadrupole		65
	Polarizability		212
Other results	Spin		77
	Number of basis functions		95
	Conformations		1