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	hartrees
Energy at 0K	-581.615857
Energy at 298.15K	-581.621753
HF Energy	-581.325954
Nuclear repulsion energy	90.532240

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_1g	2270	2150	0.00
2	A_1g	950	900	0.00
3	A_1g	440	416	0.00
4	A_1u	131	124	0.00
5	A_2u	2262	2143	109.65
6	A_2u	878	832	500.56
7	E_g	2271	2152	0.00
7	E_g	2271	2152	0.00
8	E_g	967	916	0.00
8	E_g	967	916	0.00
9	E_g	649	615	0.00
9	E_g	649	615	0.00
10	E_u	2279	2159	168.14
10	E_u	2279	2159	168.14
11	E_u	981	929	82.53
11	E_u	981	929	82.53
12	E_u	381	361	19.35
12	E_u	381	361	19.35

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	1.178
Si2	0.000	0.000	-1.178
H3	0.000	1.389	1.692
H4	-1.203	-0.695	1.692
H5	1.203	-0.695	1.692
H6	0.000	-1.389	-1.692
H7	-1.203	0.695	-1.692
H8	1.203	0.695	-1.692

	Si1	Si2	H3	H4	H5	H6	H7	H8
Si1		2.3558	1.4811	1.4811	1.4811	3.1881	3.1881	3.1881
Si2	2.3558		3.1881	3.1881	3.1881	1.4811	1.4811	1.4811
H3	1.4811	3.1881		2.4060	2.4060	4.3778	3.6574	3.6574
H4	1.4811	3.1881	2.4060		2.4060	3.6574	3.6574	4.3778
H5	1.4811	3.1881	2.4060	2.4060		3.6574	4.3778	3.6574
H6	3.1881	1.4811	4.3778	3.6574	3.6574		2.4060	2.4060
H7	3.1881	1.4811	3.6574	3.6574	4.3778	2.4060		2.4060
H8	3.1881	1.4811	3.6574	4.3778	3.6574	2.4060	2.4060

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Si1	Si2	H6	110.296	Si1	Si2	H7	110.296
Si1	Si2	H8	110.296	Si2	Si1	H3	110.296
Si2	Si1	H4	110.296	Si2	Si1	H5	110.296
H3	Si1	H4	108.634	H3	Si1	H5	108.634
H4	Si1	H5	108.634	H6	Si2	H7	108.634
H6	Si2	H8	108.634	H7	Si2	H8	108.634

All results from a given calculation for Si₂H₆ (disilane)

using model chemistry: QCISD/6-31G(2df,p)

States and conformations

	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 results from a given calculation for Si2H6 (disilane)

using model chemistry: QCISD/6-31G(2df,p)

States and conformations

All results from a given calculation for Si₂H₆ (disilane)