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 C₅H₈O (2H-Pyran, 3,4-dihydro-)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		215
	Energy 298.15K		210
	Atomization Enthalpy 298.15K	x	151	x
	Atomization Enthalpy 0K		154
	Entropy (298.15K)		144
	Entropy at any temperature		144
	Integrated Heat Capacity		144
	Heat Capacity (Cp)	x	144	x
	Nuclear Repulsion Energy		204
	HOMO-LUMO Energies		201
	Barriers to Internal Rotation		0
Geometries	Cartesians		180
	Internal Coordinates	x	179	x
	Products of moments of inertia		198
	Rotational Constants		203
	Point Group		206
Vibrations	Vibrational Frequencies		200
	Vibrational Intensities		208
	Zero-point energies		200
	Vibrational scaling factors
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		0
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		174
	Dipole		179
	Quadrupole		173
	Polarizability		159
Other results	Spin		0
	Number of basis functions		5
	Conformations		1