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 C₅H₆O (Pentadienal)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K
	Enthalpy 0K
	Energy 0K		496
	Energy 298.15K		445
	Atomization Enthalpy 298.15K		0
	Atomization Enthalpy 0K		0
	Entropy (298.15K)		0
	Entropy at any temperature		0
	Integrated Heat Capacity		0
	Heat Capacity (Cp)		0
	Nuclear Repulsion Energy		497
	HOMO-LUMO Energies		453
	Barriers to Internal Rotation		0
Geometries	Cartesians		490
	Internal Coordinates		490
	Products of moments of inertia		482
	Rotational Constants		490
	Point Group		498
Vibrations	Vibrational Frequencies		465
	Vibrational Intensities		442
	Zero-point energies		465
	Vibrational scaling factors
	Anharmonic frequencies and constants
	Raman frequencies and intensities		30
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		303
	Dipole		412
	Quadrupole		339
	Polarizability		356
Other results	Spin		0
	Number of basis functions		30
	Conformations		1