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	hartrees
Energy at 0K	-867.028796
Energy at 298.15K	-867.036242
HF Energy	-866.798132
Nuclear repulsion energy	188.930506

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2142	2076	119.03
2	A₁	2131	2065	4.05
3	A₁	2118	2053	71.05
4	A₁	928	899	74.67
5	A₁	899	872	0.01
6	A₁	862	836	196.40
7	A₁	558	541	9.37
8	A₁	351	341	0.17
9	A₁	101	97	1.31
10	A₂	2138	2073	0.00
11	A₂	920	892	0.00
12	A₂	708	686	0.00
13	A₂	432	419	0.00
14	A₂	79	77	0.00
15	B₁	2144	2078	212.75
16	B₁	2132	2066	1.42
17	B₁	924	896	81.04
18	B₁	585	567	10.67
19	B₁	299	290	19.15
20	B₁	92	89	0.00
21	B₂	2141	2075	56.42
22	B₂	2125	2060	102.77
23	B₂	922	894	35.93
24	B₂	852	826	299.83
25	B₂	704	683	276.27
26	B₂	448	434	24.02
27	B₂	410	397	1.28

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.944
Si2	0.000	1.961	-0.441
Si3	0.000	-1.961	-0.441
H4	1.231	0.000	1.821
H5	-1.231	0.000	1.821
H6	0.000	3.221	0.391
H7	0.000	-3.221	0.391
H8	1.226	1.946	-1.322
H9	-1.226	1.946	-1.322
H10	-1.226	-1.946	-1.322
H11	1.226	-1.946	-1.322

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.4013	2.4013	1.5111	1.5111	3.2677	3.2677	3.2287	3.2287	3.2287	3.2287
Si2	2.4013		3.9227	3.2369	3.2369	1.5094	5.2484	1.5097	1.5097	4.1886	4.1886
Si3	2.4013	3.9227		3.2369	3.2369	5.2484	1.5094	4.1886	4.1886	1.5097	1.5097
H4	1.5111	3.2369	3.2369		2.4620	3.7324	3.7324	3.6961	4.4383	4.4383	3.6961
H5	1.5111	3.2369	3.2369	2.4620		3.7324	3.7324	4.4383	3.6961	3.6961	4.4383
H6	3.2677	1.5094	5.2484	3.7324	3.7324		6.4412	2.4623	2.4623	5.5794	5.5794
H7	3.2677	5.2484	1.5094	3.7324	3.7324	6.4412		5.5794	5.5794	2.4623	2.4623
H8	3.2287	1.5097	4.1886	3.6961	4.4383	2.4623	5.5794		2.4522	4.5997	3.8916
H9	3.2287	1.5097	4.1886	4.4383	3.6961	2.4623	5.5794	2.4522		3.8916	4.5997
H10	3.2287	4.1886	1.5097	4.4383	3.6961	5.5794	2.4623	4.5997	3.8916		2.4522
H11	3.2287	4.1886	1.5097	3.6961	4.4383	5.5794	2.4623	3.8916	4.5997	2.4522

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.304	S1	S2	H8	109.156
S1	S2	H9	109.156	S1	S3	H7	111.304
S1	S3	H10	109.156	S1	S3	H11	109.156
S2	S1	S3	109.532	S2	S1	H4	109.548
S2	S1	H5	109.548	S3	S1	H4	109.548
S3	S1	H5	109.548	H4	S1	H5	109.104
H6	S2	H8	109.285	H6	S2	H9	109.285
H7	S3	H10	109.285	H7	S3	H11	109.285
H8	S2	H9	108.610	H10	S3	H11	108.610

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: QCISD/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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All results from a given calculation for Si3H8 (trisilane)

using model chemistry: QCISD/3-21G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)