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	hartrees
Energy at 0K	-863.254460
Energy at 298.15K	-863.262628
HF Energy	-863.254460
Nuclear repulsion energy	198.718423

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2699	2409	35.84
2	A₁	2647	2362	22.43
3	A₁	2646	2361	0.07
4	A₁	1145	1021	108.88
5	A₁	1131	1009	0.03
6	A₁	1071	956	203.37
7	A₁	678	605	15.71
8	A₁	485	433	2.98
9	A₁	136	121	2.32
10	A₂	2697	2407	0.00
11	A₂	1135	1013	0.00
12	A₂	867	774	0.00
13	A₂	563	502	0.00
14	A₂	90	80	0.00
15	B₁	2699	2409	62.66
16	B₁	2679	2391	11.30
17	B₁	1137	1015	96.78
18	B₁	706	630	17.38
19	B₁	422	377	32.71
20	B₁	96	86	0.03
21	B₂	2699	2408	14.39
22	B₂	2646	2361	20.23
23	B₂	1138	1015	32.48
24	B₂	1056	942	317.91
25	B₂	888	793	382.34
26	B₂	600	535	6.87
27	B₂	575	513	24.40

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.833
Si2	0.000	1.896	-0.393
Si3	0.000	-1.896	-0.393
H4	1.156	0.000	1.703
H5	-1.156	0.000	1.703
H6	0.000	3.067	0.454
H7	0.000	-3.067	0.454
H8	1.165	1.971	-1.244
H9	-1.165	1.971	-1.244
H10	-1.165	-1.971	-1.244
H11	1.165	-1.971	-1.244

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.2575	2.2575	1.4467	1.4467	3.0901	3.0901	3.0909	3.0909	3.0909	3.0909
Si2	2.2575		3.7922	3.0531	3.0531	1.4450	5.0347	1.4451	1.4451	4.1273	4.1273
Si3	2.2575	3.7922		3.0531	3.0531	5.0347	1.4450	4.1273	4.1273	1.4451	1.4451
H4	1.4467	3.0531	3.0531		2.3117	3.5071	3.5071	3.5449	4.2372	4.2372	3.5449
H5	1.4467	3.0531	3.0531	2.3117		3.5071	3.5071	4.2372	3.5449	3.5449	4.2372
H6	3.0901	1.4450	5.0347	3.5071	3.5071		6.1337	2.3331	2.3331	5.4423	5.4423
H7	3.0901	5.0347	1.4450	3.5071	3.5071	6.1337		5.4423	5.4423	2.3331	2.3331
H8	3.0909	1.4451	4.1273	3.5449	4.2372	2.3331	5.4423		2.3306	4.5789	3.9414
H9	3.0909	1.4451	4.1273	4.2372	3.5449	2.3331	5.4423	2.3306		3.9414	4.5789
H10	3.0909	4.1273	1.4451	4.2372	3.5449	5.4423	2.3331	4.5789	3.9414		2.3306
H11	3.0909	4.1273	1.4451	3.5449	4.2372	5.4423	2.3331	3.9414	4.5789	2.3306

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.248	S1	S2	H8	111.290
S1	S2	H9	111.290	S1	S3	H7	111.248
S1	S3	H10	111.290	S1	S3	H11	111.290
S2	S1	S3	114.261	S2	S1	H4	109.050
S2	S1	H5	109.050	S3	S1	H4	109.050
S3	S1	H5	109.050	H4	S1	H5	106.059
H6	S2	H8	107.665	H6	S2	H9	107.665
H7	S3	H10	107.665	H7	S3	H11	107.665
H8	S2	H9	107.493	H10	S3	H11	107.493

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B3LYP/STO-3G

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	0.263
2	Si	0.385
3	Si	0.385
4	H	-0.128
5	H	-0.128
6	H	-0.128
7	H	-0.128
8	H	-0.130
9	H	-0.130
10	H	-0.130
11	H	-0.130

<r²>	195.449
(<r²>)^1/2	13.980

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B3LYP/STO-3G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)