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 C₅H₁₀ (2-Butene, 2-methyl-)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K	x
	Energy 0K		241
	Energy 298.15K		236
	Atomization Enthalpy 298.15K	x	170	x
	Atomization Enthalpy 0K	x	171	x
	Entropy (298.15K)	x	165	x
	Entropy at any temperature		165
	Integrated Heat Capacity	x	165	x
	Heat Capacity (Cp)	x	165	x
	Nuclear Repulsion Energy		224
	HOMO-LUMO Energies		225
	Barriers to Internal Rotation		0
Geometries	Cartesians		205
	Internal Coordinates		204
	Products of moments of inertia		219
	Rotational Constants		223
	Point Group		229
Vibrations	Vibrational Frequencies	fun.	219	x
	Vibrational Intensities		232
	Zero-point energies		219
	Vibrational scaling factors
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		0
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		179
	Dipole		185
	Quadrupole		178
	Polarizability		165
Other results	Spin		0
	Number of basis functions		6
	Conformations		1