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 ZnCH₂ (Zinc methylene)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		635
	Energy 298.15K		509
	Atomization Enthalpy 298.15K		15
	Atomization Enthalpy 0K		432
	Entropy (298.15K)		0
	Entropy at any temperature		0
	Integrated Heat Capacity		0
	Heat Capacity (Cp)		0
	Nuclear Repulsion Energy		626
	HOMO-LUMO Energies		633
	Barriers to Internal Rotation		0
Geometries	Cartesians		633
	Internal Coordinates		630
	Products of moments of inertia		618
	Rotational Constants		633
	Point Group		638
Vibrations	Vibrational Frequencies	fun.	612	x
	Vibrational Intensities		591
	Zero-point energies	x	612	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		15
Electronic States	Electronic states	x	411
Electrostatics	Atom charges		405
	Dipole		412
	Quadrupole		400
	Polarizability		377
Other results	Spin		223
	Number of basis functions		5
	Conformations		2	x