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 C₄H₆ (Methylenecyclopropane)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K	x
	Energy 0K		305
	Energy 298.15K		292
	Atomization Enthalpy 298.15K	x	207	x
	Atomization Enthalpy 0K	x	207	x
	Entropy (298.15K)	x	177	x
	Entropy at any temperature		177
	Integrated Heat Capacity	x	177	x
	Heat Capacity (Cp)	x	177	x
	Nuclear Repulsion Energy		255
	HOMO-LUMO Energies		254
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	227
	Internal Coordinates	x	226	x
	Products of moments of inertia	x	245	x
	Rotational Constants	x	250	x
	Point Group		252
Vibrations	Vibrational Frequencies	fun.	243	x
	Vibrational Intensities		262
	Zero-point energies	x	243	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		198
	Dipole	x	221	x
	Quadrupole	x	204	x
	Polarizability		185
Other results	Spin		0
	Number of basis functions		6
	Conformations		1