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 C₅H₈ (Spiropentane)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		237
	Energy 298.15K		228
	Atomization Enthalpy 298.15K	x	167	x
	Atomization Enthalpy 0K		171
	Entropy (298.15K)	x	161	x
	Entropy at any temperature		161
	Integrated Heat Capacity		161
	Heat Capacity (Cp)	x	161	x
	Nuclear Repulsion Energy		219
	HOMO-LUMO Energies		219
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	196
	Internal Coordinates	x	195	x
	Products of moments of inertia		213
	Rotational Constants	x	217	x
	Point Group		218
Vibrations	Vibrational Frequencies	fun.	215	x
	Vibrational Intensities		228
	Zero-point energies	x	215	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		184
	Dipole		189
	Quadrupole		182
	Polarizability	x	169	x
Other results	Spin		0
	Number of basis functions		6
	Conformations		1