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 C₄H₄N₂ (Pyridazine)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		234
	Energy 298.15K		223
	Atomization Enthalpy 298.15K	x	167	x
	Atomization Enthalpy 0K		166
	Entropy (298.15K)		157
	Entropy at any temperature		157
	Integrated Heat Capacity		157
	Heat Capacity (Cp)		157
	Nuclear Repulsion Energy		212
	HOMO-LUMO Energies		104
	Barriers to Internal Rotation		0
Geometries	Cartesians	x	182
	Internal Coordinates	x	181	x
	Products of moments of inertia	x	207	x
	Rotational Constants	x	212	x
	Point Group		214
Vibrations	Vibrational Frequencies	fun.	210	x
	Vibrational Intensities		220
	Zero-point energies		210
	Vibrational scaling factors
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		180
	Dipole		187
	Quadrupole		178
	Polarizability		170
Other results	Spin		0
	Number of basis functions		5
	Conformations		1