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	hartrees
Energy at 0K	-868.664813
Energy at 298.15K
HF Energy	-868.664813
Nuclear repulsion energy	191.783503

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2205	2105	140.14
2	A₁	2188	2089	5.91
3	A₁	2174	2075	76.54
4	A₁	933	891	56.84
5	A₁	899	858	11.99
6	A₁	848	810	163.18
7	A₁	555	530	6.99
8	A₁	375	358	0.24
9	A₁	102	98	1.22
10	A₂	2201	2101	0.00
11	A₂	925	883	0.00
12	A₂	709	677	0.00
13	A₂	427	407	0.00
14	A₂	22i	21i	0.00
15	B₁	2208	2108	247.29
16	B₁	2190	2091	5.11
17	B₁	930	888	65.55
18	B₁	574	548	9.96
19	B₁	291	278	15.78
20	B₁	54	51	0.01
21	B₂	2203	2103	70.54
22	B₂	2182	2083	115.61
23	B₂	930	888	36.98
24	B₂	832	795	272.07
25	B₂	688	657	222.32
26	B₂	453	433	13.42
27	B₂	428	408	9.16

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.933
Si2	0.000	1.922	-0.436
Si3	0.000	-1.922	-0.436
H4	1.218	0.000	1.809
H5	-1.218	0.000	1.809
H6	0.000	3.179	0.380
H7	0.000	-3.179	0.380
H8	1.215	1.909	-1.312
H9	-1.215	1.909	-1.312
H10	-1.215	-1.909	-1.312
H11	1.215	-1.909	-1.312

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3598	2.3598	1.5003	1.5003	3.2273	3.2273	3.1884	3.1884	3.1884	3.1884
Si2	2.3598		3.8441	3.1966	3.1966	1.4986	5.1662	1.4986	1.4986	4.1140	4.1140
Si3	2.3598	3.8441		3.1966	3.1966	5.1662	1.4986	4.1140	4.1140	1.4986	1.4986
H4	1.5003	3.1966	3.1966		2.4361	3.6928	3.6928	3.6593	4.3946	4.3946	3.6593
H5	1.5003	3.1966	3.1966	2.4361		3.6928	3.6928	4.3946	3.6593	3.6593	4.3946
H6	3.2273	1.4986	5.1662	3.6928	3.6928		6.3589	2.4399	2.4399	5.4987	5.4987
H7	3.2273	5.1662	1.4986	3.6928	3.6928	6.3589		5.4987	5.4987	2.4399	2.4399
H8	3.1884	1.4986	4.1140	3.6593	4.3946	2.4399	5.4987		2.4307	4.5266	3.8186
H9	3.1884	1.4986	4.1140	4.3946	3.6593	2.4399	5.4987	2.4307		3.8186	4.5266
H10	3.1884	4.1140	1.4986	4.3946	3.6593	5.4987	2.4399	4.5266	3.8186		2.4307
H11	3.1884	4.1140	1.4986	3.6593	4.3946	5.4987	2.4399	3.8186	4.5266	2.4307

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.579	S1	S2	H8	109.419
S1	S2	H9	109.419	S1	S3	H7	111.579
S1	S3	H10	109.419	S1	S3	H11	109.419
S2	S1	S3	109.078	S2	S1	H4	109.799
S2	S1	H5	109.799	S3	S1	H4	109.799
S3	S1	H5	109.799	H4	S1	H5	108.556
H6	S2	H8	108.991	H6	S2	H9	108.991
H7	S3	H10	108.991	H7	S3	H11	108.991
H8	S2	H9	108.383	H10	S3	H11	108.383

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: mPW1PW91/3-21G

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	0.013
2	Si	0.280
3	Si	0.280
4	H	-0.056
5	H	-0.056
6	H	-0.077
7	H	-0.077
8	H	-0.076
9	H	-0.076
10	H	-0.076
11	H	-0.076

<r²>	208.169
(<r²>)^1/2	14.428

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: mPW1PW91/3-21G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)