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 C₃H₄ (cyclopropene)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K	x
	Energy 0K		615
	Energy 298.15K		576
	Atomization Enthalpy 298.15K	x	0	x
	Atomization Enthalpy 0K	x	0	x
	Entropy (298.15K)	x	0	x
	Entropy at any temperature		0
	Integrated Heat Capacity		0
	Heat Capacity (Cp)	x	0	x
	Nuclear Repulsion Energy		616
	HOMO-LUMO Energies		544
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	616
	Internal Coordinates	x	616	x
	Products of moments of inertia	x	608	x
	Rotational Constants	x	616	x
	Point Group		617
Vibrations	Vibrational Frequencies	fun.	626	x
	Vibrational Intensities		784
	Zero-point energies	x	626	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		427
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		343
	Dipole	x	489	x
	Quadrupole	x	398	x
	Polarizability		407
Other results	Spin		0
	Number of basis functions		35
	Conformations		1