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	hartrees
Energy at 0K	-873.305560
Energy at 298.15K	-873.312902
HF Energy	-873.305560
Nuclear repulsion energy	191.857392

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2164	2133	144.19
2	A₁	2150	2120	10.34
3	A₁	2129	2099	69.15
4	A₁	929	916	64.49
5	A₁	903	891	0.22
6	A₁	866	854	174.83
7	A₁	549	541	4.66
8	A₁	373	368	0.44
9	A₁	93	92	1.16
10	A₂	2162	2131	0.00
11	A₂	920	908	0.00
12	A₂	686	676	0.00
13	A₂	404	398	0.00
14	A₂	42	41	0.00
15	B₁	2167	2137	239.24
16	B₁	2142	2112	23.99
17	B₁	925	912	65.12
18	B₁	577	569	8.09
19	B₁	301	297	16.52
20	B₁	77	76	0.02
21	B₂	2162	2132	69.75
22	B₂	2145	2115	109.93
23	B₂	922	909	35.71
24	B₂	852	840	296.29
25	B₂	694	684	262.49
26	B₂	446	440	7.24
27	B₂	417	411	13.30

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.916
Si2	0.000	1.935	-0.429
Si3	0.000	-1.935	-0.429
H4	1.210	0.000	1.796
H5	-1.210	0.000	1.796
H6	0.000	3.176	0.400
H7	0.000	-3.176	0.400
H8	1.211	1.942	-1.302
H9	-1.211	1.942	-1.302
H10	-1.211	-1.942	-1.302
H11	1.211	-1.942	-1.302

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3562	2.3562	1.4958	1.4958	3.2175	3.2175	3.1874	3.1874	3.1874	3.1874
Si2	2.3562		3.8690	3.1868	3.1868	1.4930	5.1773	1.4930	1.4930	4.1545	4.1545
Si3	2.3562	3.8690		3.1868	3.1868	5.1773	1.4930	4.1545	4.1545	1.4930	1.4930
H4	1.4958	3.1868	3.1868		2.4195	3.6739	3.6739	3.6563	4.3851	4.3851	3.6563
H5	1.4958	3.1868	3.1868	2.4195		3.6739	3.6739	4.3851	3.6563	3.6563	4.3851
H6	3.2175	1.4930	5.1773	3.6739	3.6739		6.3519	2.4261	2.4261	5.5283	5.5283
H7	3.2175	5.1773	1.4930	3.6739	3.6739	6.3519		5.5283	5.5283	2.4261	2.4261
H8	3.1874	1.4930	4.1545	3.6563	4.3851	2.4261	5.5283		2.4225	4.5783	3.8849
H9	3.1874	1.4930	4.1545	4.3851	3.6563	2.4261	5.5283	2.4225		3.8849	4.5783
H10	3.1874	4.1545	1.4930	4.3851	3.6563	5.5283	2.4261	4.5783	3.8849		2.4225
H11	3.1874	4.1545	1.4930	3.6563	4.3851	5.5283	2.4261	3.8849	4.5783	2.4225

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.442	S1	S2	H8	109.761
S1	S2	H9	109.761	S1	S3	H7	111.442
S1	S3	H10	109.761	S1	S3	H11	109.761
S2	S1	S3	110.377	S2	S1	H4	109.618
S2	S1	H5	109.618	S3	S1	H4	109.618
S3	S1	H5	109.618	H4	S1	H5	107.953
H6	S2	H8	108.684	H6	S2	H9	108.684
H7	S3	H10	108.684	H7	S3	H11	108.684
H8	S2	H9	108.445	H10	S3	H11	108.445

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B97D3/cc-pVTZ

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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Number	Element	Mulliken
1	Si	0.094
2	Si	0.123
3	Si	0.123
4	H	-0.049
5	H	-0.049
6	H	-0.040
7	H	-0.040
8	H	-0.040
9	H	-0.040
10	H	-0.040
11	H	-0.040

<r²>	208.414
(<r²>)^1/2	14.437

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B97D3/cc-pVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)