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	hartrees
Energy at 0K	-873.293654
Energy at 298.15K	-873.300940
HF Energy	-873.293654
Nuclear repulsion energy	191.760879

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2170	2139	152.45
2	A₁	2157	2126	10.15
3	A₁	2137	2106	72.39
4	A₁	931	918	67.85
5	A₁	905	892	0.80
6	A₁	869	856	190.82
7	A₁	553	545	6.11
8	A₁	372	367	0.61
9	A₁	93	92	1.43
10	A₂	2167	2136	0.00
11	A₂	922	909	0.00
12	A₂	689	679	0.00
13	A₂	407	401	0.00
14	A₂	16	16	0.00
15	B₁	2173	2142	256.69
16	B₁	2149	2118	22.72
17	B₁	927	914	71.26
18	B₁	581	573	10.17
19	B₁	303	298	20.94
20	B₁	68	68	0.04
21	B₂	2168	2137	73.37
22	B₂	2152	2121	112.47
23	B₂	924	911	38.62
24	B₂	855	843	305.35
25	B₂	699	689	277.81
26	B₂	446	440	9.17
27	B₂	420	414	14.54

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	1.211	0.000	1.797
H5	-1.211	0.000	1.797
H6	0.000	3.178	0.402
H7	0.000	-3.178	0.402
H8	1.212	1.943	-1.303
H9	-1.212	1.943	-1.303
H10	-1.212	-1.943	-1.303
H11	1.212	-1.943	-1.303

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3571	2.3571	1.4969	1.4969	3.2190	3.2190	3.1890	3.1890	3.1890	3.1890
Si2	2.3571		3.8704	3.1883	3.1883	1.4944	5.1798	1.4945	1.4945	4.1559	4.1559
Si3	2.3571	3.8704		3.1883	3.1883	5.1798	1.4944	4.1559	4.1559	1.4945	1.4945
H4	1.4969	3.1883	3.1883		2.4216	3.6755	3.6755	3.6581	4.3879	4.3879	3.6581
H5	1.4969	3.1883	3.1883	2.4216		3.6755	3.6755	4.3879	3.6581	3.6581	4.3879
H6	3.2190	1.4944	5.1798	3.6755	3.6755		6.3550	2.4289	2.4289	5.5309	5.5309
H7	3.2190	5.1798	1.4944	3.6755	3.6755	6.3550		5.5309	5.5309	2.4289	2.4289
H8	3.1890	1.4945	4.1559	3.6581	4.3879	2.4289	5.5309		2.4248	4.5799	3.8854
H9	3.1890	1.4945	4.1559	4.3879	3.6581	2.4289	5.5309	2.4248		3.8854	4.5799
H10	3.1890	4.1559	1.4945	4.3879	3.6581	5.5309	2.4289	4.5799	3.8854		2.4248
H11	3.1890	4.1559	1.4945	3.6581	4.3879	5.5309	2.4289	3.8854	4.5799	2.4248

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.419	S1	S2	H8	109.749
S1	S2	H9	109.749	S1	S3	H7	111.419
S1	S3	H10	109.749	S1	S3	H11	109.749
S2	S1	S3	110.375	S2	S1	H4	109.614
S2	S1	H5	109.614	S3	S1	H4	109.614
S3	S1	H5	109.614	H4	S1	H5	107.971
H6	S2	H8	108.712	H6	S2	H9	108.712
H7	S3	H10	108.712	H7	S3	H11	108.712
H8	S2	H9	108.438	H10	S3	H11	108.438

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B97D3/6-311G**

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	0.121
2	Si	0.306
3	Si	0.306
4	H	-0.078
5	H	-0.078
6	H	-0.091
7	H	-0.091
8	H	-0.099
9	H	-0.099
10	H	-0.099
11	H	-0.099

<r²>	208.602
(<r²>)^1/2	14.443

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B97D3/6-311G**

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)