CCCBDB listing of experimental data page 2

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Bond Type	Count
Si=Si	1
H-Si	2

Atom 1	Atom 2
Si1	Si2
Si1	H3
Si2	H4

State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	¹Σ_G	D_∞h	False							D_∞h	0	1
1	2	¹A_G	C_2h	False							C_2h	0	3
1	3	¹A₁	C_2v	True							C_2v	1	2
1	4	¹A^'	C_s

State	Config	State description	Conf description	Exp. min.	Quadrupole (D Å)			Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	xx	yy	zz	Reference	comment	Point Group	dipole	quadrupole
1	1	¹Σ_G	D_∞h	False						D_∞h	0	1
1	2	¹A_G	C_2h	False						C_2h	0	3
1	3	¹A₁	C_2v	True						C_2v	1	2
1	4	¹A^'	C_s

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Experimental data for Si2H2 (disilyne)

Experimental data for Si₂H₂ (disilyne)