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 Si₂H₆ (disilane)

Property		Experiment	Calculated	Comparison
Energies Entropies	Enthalpy 298.15K	x
	Enthalpy 0K
	Energy 0K		908
	Energy 298.15K		763
	Atomization Enthalpy 298.15K	x	25	x
	Atomization Enthalpy 0K		25
	Entropy (298.15K)	x	21	x
	Entropy at any temperature		21
	Integrated Heat Capacity	x	21	x
	Heat Capacity (Cp)		21
	Nuclear Repulsion Energy		887
	HOMO-LUMO Energies		741
	Barriers to Internal Rotation		375
Geometries	Cartesians	x	856
	Internal Coordinates	x	856	x
	Products of moments of inertia	x	848	x
	Rotational Constants	x	858	x
	Point Group		888
Vibrations	Vibrational Frequencies	fun.	835	x
	Vibrational Intensities		1020
	Zero-point energies	x	835	x
	Vibrational scaling factors	x
	Anharmonic frequencies and constants		1
	Raman frequencies and intensities		5
Electronic States	Electronic states	x	0
Electrostatics	Atom charges		467
	Dipole		621
	Quadrupole		505
	Polarizability	x	551	x
Other results	Spin		0
	Number of basis functions		40
	Conformations		1