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	hartrees
Energy at 0K	-862.916676
Energy at 298.15K	-862.924852
HF Energy	-862.916676
Nuclear repulsion energy	199.683707

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2728	2409	31.14
2	A₁	2677	2364	8.82
3	A₁	2675	2362	8.67
4	A₁	1145	1011	100.97
5	A₁	1131	999	0.20
6	A₁	1069	944	188.01
7	A₁	683	603	13.68
8	A₁	498	440	2.88
9	A₁	136	120	2.08
10	A₂	2731	2411	0.00
11	A₂	1136	1003	0.00
12	A₂	872	770	0.00
13	A₂	563	498	0.00
14	A₂	84	74	0.00
15	B₁	2732	2413	50.49
16	B₁	2709	2392	11.45
17	B₁	1138	1005	88.79
18	B₁	710	627	15.76
19	B₁	424	374	29.35
20	B₁	90	80	0.04
21	B₂	2728	2409	10.97
22	B₂	2676	2363	18.12
23	B₂	1139	1006	31.41
24	B₂	1054	931	291.64
25	B₂	889	786	346.23
26	B₂	613	541	4.25
27	B₂	578	511	26.15

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.832
Si2	0.000	1.881	-0.392
Si3	0.000	-1.881	-0.392
H4	1.156	0.000	1.700
H5	-1.156	0.000	1.700
H6	0.000	3.054	0.451
H7	0.000	-3.054	0.451
H8	1.165	1.952	-1.242
H9	-1.165	1.952	-1.242
H10	-1.165	-1.952	-1.242
H11	1.165	-1.952	-1.242

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.2444	2.2444	1.4458	1.4458	3.0775	3.0775	3.0770	3.0770	3.0770	3.0770
Si2	2.2444		3.7630	3.0418	3.0418	1.4443	5.0070	1.4436	1.4436	4.0959	4.0959
Si3	2.2444	3.7630		3.0418	3.0418	5.0070	1.4443	4.0959	4.0959	1.4436	1.4436
H4	1.4458	3.0418	3.0418		2.3117	3.4959	3.4959	3.5311	4.2252	4.2252	3.5311
H5	1.4458	3.0418	3.0418	2.3117		3.4959	3.4959	4.2252	3.5311	3.5311	4.2252
H6	3.0775	1.4443	5.0070	3.4959	3.4959		6.1079	2.3321	2.3321	5.4117	5.4117
H7	3.0775	5.0070	1.4443	3.4959	3.4959	6.1079		5.4117	5.4117	2.3321	2.3321
H8	3.0770	1.4436	4.0959	3.5311	4.2252	2.3321	5.4117		2.3291	4.5463	3.9044
H9	3.0770	1.4436	4.0959	4.2252	3.5311	2.3321	5.4117	2.3291		3.9044	4.5463
H10	3.0770	4.0959	1.4436	4.2252	3.5311	5.4117	2.3321	4.5463	3.9044		2.3291
H11	3.0770	4.0959	1.4436	3.5311	4.2252	5.4117	2.3321	3.9044	4.5463	2.3291

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.232	S1	S2	H8	111.233
S1	S2	H9	111.233	S1	S3	H7	111.232
S1	S3	H10	111.233	S1	S3	H11	111.233
S2	S1	S3	113.925	S2	S1	H4	109.118
S2	S1	H5	109.118	S3	S1	H4	109.118
S3	S1	H5	109.118	H4	S1	H5	106.157
H6	S2	H8	107.709	H6	S2	H9	107.709
H7	S3	H10	107.709	H7	S3	H11	107.709
H8	S2	H9	107.544	H10	S3	H11	107.544

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: HSEh1PBE/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	0.238
2	Si	0.351
3	Si	0.351
4	H	-0.116
5	H	-0.116
6	H	-0.117
7	H	-0.117
8	H	-0.119
9	H	-0.119
10	H	-0.119
11	H	-0.119

<r²>	193.130
(<r²>)^1/2	13.897

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: HSEh1PBE/STO-3G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)