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	hartrees
Energy at 0K	-867.400998
Energy at 298.15K	-867.408816
HF Energy	-867.073022
Nuclear repulsion energy	194.169612

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2316	2316	122.95
2	A₁	2303	2303	9.83
3	A₁	2286	2286	68.14
4	A₁	979	979	67.69
5	A₁	956	956	7.87
6	A₁	923	923	195.98
7	A₁	595	595	7.21
8	A₁	415	415	0.62
9	A₁	103	103	1.42
10	A₂	2314	2314	0.00
11	A₂	971	971	0.00
12	A₂	745	745	0.00
13	A₂	442	442	0.00
14	A₂	86	86	0.00
15	B₁	2317	2317	203.83
16	B₁	2298	2298	21.11
17	B₁	974	974	80.20
18	B₁	624	624	10.49
19	B₁	320	320	19.10
20	B₁	105	105	0.02
21	B₂	2315	2315	56.94
22	B₂	2299	2299	105.18
23	B₂	972	972	36.06
24	B₂	913	913	317.34
25	B₂	753	753	274.34
26	B₂	493	493	4.79
27	B₂	458	458	20.95

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.902
Si2	0.000	1.907	-0.422
Si3	0.000	-1.907	-0.422
H4	1.205	0.000	1.777
H5	-1.205	0.000	1.777
H6	0.000	3.141	0.406
H7	0.000	-3.141	0.406
H8	1.205	1.914	-1.293
H9	-1.205	1.914	-1.293
H10	-1.205	-1.914	-1.293
H11	1.205	-1.914	-1.293

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3212	2.3212	1.4897	1.4897	3.1802	3.1802	3.1516	3.1516	3.1516	3.1516
Si2	2.3212		3.8132	3.1505	3.1505	1.4869	5.1154	1.4870	1.4870	4.0999	4.0999
Si3	2.3212	3.8132		3.1505	3.1505	5.1154	1.4869	4.0999	4.0999	1.4870	1.4870
H4	1.4897	3.1505	3.1505		2.4107	3.6332	3.6332	3.6178	4.3475	4.3475	3.6178
H5	1.4897	3.1505	3.1505	2.4107		3.6332	3.6332	4.3475	3.6178	3.6178	4.3475
H6	3.1802	1.4869	5.1154	3.6332	3.6332		6.2826	2.4178	2.4178	5.4678	5.4678
H7	3.1802	5.1154	1.4869	3.6332	3.6332	6.2826		5.4678	5.4678	2.4178	2.4178
H8	3.1516	1.4870	4.0999	3.6178	4.3475	2.4178	5.4678		2.4109	4.5242	3.8283
H9	3.1516	1.4870	4.0999	4.3475	3.6178	2.4178	5.4678	2.4109		3.8283	4.5242
H10	3.1516	4.0999	1.4870	4.3475	3.6178	5.4678	2.4178	4.5242	3.8283		2.4109
H11	3.1516	4.0999	1.4870	3.6178	4.3475	5.4678	2.4178	3.8283	4.5242	2.4109

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.365	S1	S2	H8	109.760
S1	S2	H9	109.760	S1	S3	H7	111.365
S1	S3	H10	109.760	S1	S3	H11	109.760
S2	S1	S3	110.448	S2	S1	H4	109.584
S2	S1	H5	109.584	S3	S1	H4	109.584
S3	S1	H5	109.584	H4	S1	H5	108.016
H6	S2	H8	108.783	H6	S2	H9	108.783
H7	S3	H10	108.783	H7	S3	H11	108.783
H8	S2	H9	108.327	H10	S3	H11	108.327

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: MP3=FULL/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: MP3=FULL/3-21G*

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)