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 C₂F₂ (difluoroacetylene)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		293
	Energy 298.15K		281
	Atomization Enthalpy 298.15K	x	212	x
	Atomization Enthalpy 0K		211
	Entropy (298.15K)	x	192	x
	Entropy at any temperature		192
	Integrated Heat Capacity		192
	Heat Capacity (Cp)		192
	Nuclear Repulsion Energy		260
	HOMO-LUMO Energies		264
	Barriers to Internal Rotation		0
Geometries	Cartesians		250
	Internal Coordinates	x	249	x
	Products of moments of inertia		259
	Rotational Constants		263
	Point Group		265
Vibrations	Vibrational Frequencies	fun.	264	x
	Vibrational Intensities		253
	Zero-point energies	x	264	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		251
	Dipole		174
	Quadrupole		168
	Polarizability		177
Other results	Spin		0
	Number of basis functions		8
	Conformations		1