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 (Succinonitrile)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		234
	Energy 298.15K		223
	Atomization Enthalpy 298.15K	x	163	x
	Atomization Enthalpy 0K		164
	Entropy (298.15K)		152
	Entropy at any temperature		152
	Integrated Heat Capacity		152
	Heat Capacity (Cp)		152
	Nuclear Repulsion Energy		213
	HOMO-LUMO Energies		205
	Barriers to Internal Rotation		323
Geometries	Cartesians	x	186
	Internal Coordinates	x	185	x
	Products of moments of inertia	x	207	x
	Rotational Constants		212
	Point Group		215
Vibrations	Vibrational Frequencies	fun.	206	x
	Vibrational Intensities		221
	Zero-point energies		206
	Vibrational scaling factors
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		6
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		178
	Dipole		184
	Quadrupole		178
	Polarizability		168
Other results	Spin		0
	Number of basis functions		3
	Conformations		2	x