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	hartrees
Energy at 0K	-872.847347
Energy at 298.15K	-872.854708
HF Energy	-872.847347
Nuclear repulsion energy	191.696299

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2155	2155	119.75
2	A₁	2141	2141	6.36
3	A₁	2122	2122	51.54
4	A₁	909	909	59.06
5	A₁	883	883	0.04
6	A₁	843	843	149.77
7	A₁	539	539	3.94
8	A₁	373	373	0.44
9	A₁	90	90	1.03
10	A₂	2154	2154	0.00
11	A₂	901	901	0.00
12	A₂	678	678	0.00
13	A₂	397	397	0.00
14	A₂	73	73	0.00
15	B₁	2158	2158	187.99
16	B₁	2134	2134	18.29
17	B₁	906	906	56.07
18	B₁	565	565	7.72
19	B₁	298	298	13.46
20	B₁	89	89	0.05
21	B₂	2153	2153	47.31
22	B₂	2137	2137	96.08
23	B₂	903	903	29.09
24	B₂	829	829	273.46
25	B₂	678	678	257.11
26	B₂	448	448	4.07
27	B₂	411	411	13.76

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.900
Si2	0.000	1.945	-0.423
Si3	0.000	-1.945	-0.423
H4	1.211	0.000	1.786
H5	-1.211	0.000	1.786
H6	0.000	3.176	0.430
H7	0.000	-3.176	0.430
H8	1.214	1.972	-1.298
H9	-1.214	1.972	-1.298
H10	-1.214	-1.972	-1.298
H11	1.214	-1.972	-1.298

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3514	2.3514	1.5008	1.5008	3.2107	3.2107	3.1930	3.1930	3.1930	3.1930
Si2	2.3514		3.8890	3.1821	3.1821	1.4977	5.1910	1.4975	1.4975	4.1931	4.1931
Si3	2.3514	3.8890		3.1821	3.1821	5.1910	1.4977	4.1931	4.1931	1.4975	1.4975
H4	1.5008	3.1821	3.1821		2.4220	3.6598	3.6598	3.6611	4.3916	4.3916	3.6611
H5	1.5008	3.1821	3.1821	2.4220		3.6598	3.6598	4.3916	3.6611	3.6611	4.3916
H6	3.2107	1.4977	5.1910	3.6598	3.6598		6.3522	2.4311	2.4311	5.5647	5.5647
H7	3.2107	5.1910	1.4977	3.6598	3.6598	6.3522		5.5647	5.5647	2.4311	2.4311
H8	3.1930	1.4975	4.1931	3.6611	4.3916	2.4311	5.5647		2.4287	4.6321	3.9443
H9	3.1930	1.4975	4.1931	4.3916	3.6611	2.4311	5.5647	2.4287		3.9443	4.6321
H10	3.1930	4.1931	1.4975	4.3916	3.6611	5.5647	2.4311	4.6321	3.9443		2.4287
H11	3.1930	4.1931	1.4975	3.6611	4.3916	5.5647	2.4311	3.9443	4.6321	2.4287

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.105	S1	S2	H8	110.128
S1	S2	H9	110.128	S1	S3	H7	111.105
S1	S3	H10	110.128	S1	S3	H11	110.128
S2	S1	S3	111.575	S2	S1	H4	109.397
S2	S1	H5	109.397	S3	S1	H4	109.397
S3	S1	H5	109.397	H4	S1	H5	107.592
H6	S2	H8	108.520	H6	S2	H9	108.520
H7	S3	H10	108.520	H7	S3	H11	108.520
H8	S2	H9	108.370	H10	S3	H11	108.370

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: PBEPBE/cc-pCVTZ

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	0.018
2	Si	0.021
3	Si	0.021
4	H	-0.011
5	H	-0.011
6	H	-0.006
7	H	-0.006
8	H	-0.007
9	H	-0.007
10	H	-0.007
11	H	-0.007

<r²>	209.275
(<r²>)^1/2	14.466

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: PBEPBE/cc-pCVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)