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	hartrees
Energy at 0K	-871.832116
Energy at 298.15K	-871.839743
HF Energy	-871.440406
Nuclear repulsion energy	191.202847

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	?_a	955	955	73.54
2	?_a	955	955	78.38
3	A₁	2238	2238	129.08
4	A₁	2227	2227	31.78
5	A₁	2210	2210	73.75
6	A₁	934	934	0.61
7	A₁	891	891	204.25
8	A₁	568	568	6.59
9	A₁	388	388	0.57
10	A₁	93	93	1.50
11	A₂	2233	2233	0.00
12	A₂	950	950	0.00
13	A₂	712	712	0.00
14	A₂	419	419	0.00
15	A₂	73	73	0.00
16	B₁	2239	2239	263.36
17	B₁	2220	2220	14.15
18	B₁	599	599	9.96
19	B₁	320	320	21.66
20	B₁	96	96	0.07
21	B₂	2237	2237	99.26
22	B₂	2222	2222	87.11
23	B₂	949	949	40.33
24	B₂	879	879	319.40
25	B₂	718	718	303.04
26	B₂	464	464	8.91
27	B₂	435	435	18.91

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.921
Si2	0.000	1.943	-0.432
Si3	0.000	-1.943	-0.432
H4	1.212	0.000	1.798
H5	-1.212	0.000	1.798
H6	0.000	3.182	0.402
H7	0.000	-3.182	0.402
H8	1.213	1.949	-1.303
H9	-1.213	1.949	-1.303
H10	-1.213	-1.949	-1.303
H11	1.213	-1.949	-1.303

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3677	2.3677	1.4957	1.4957	3.2236	3.2236	3.1965	3.1965	3.1965	3.1965
Si2	2.3677		3.8863	3.1960	3.1960	1.4927	5.1920	1.4935	1.4935	4.1686	4.1686
Si3	2.3677	3.8863		3.1960	3.1960	5.1920	1.4927	4.1686	4.1686	1.4935	1.4935
H4	1.4957	3.1960	3.1960		2.4243	3.6796	3.6796	3.6625	4.3924	4.3924	3.6625
H5	1.4957	3.1960	3.1960	2.4243		3.6796	3.6796	4.3924	3.6625	3.6625	4.3924
H6	3.2236	1.4927	5.1920	3.6796	3.6796		6.3630	2.4286	2.4286	5.5406	5.5406
H7	3.2236	5.1920	1.4927	3.6796	3.6796	6.3630		5.5406	5.5406	2.4286	2.4286
H8	3.1965	1.4935	4.1686	3.6625	4.3924	2.4286	5.5406		2.4253	4.5906	3.8976
H9	3.1965	1.4935	4.1686	4.3924	3.6625	2.4286	5.5406	2.4253		3.8976	4.5906
H10	3.1965	4.1686	1.4935	4.3924	3.6625	5.5406	2.4286	4.5906	3.8976		2.4253
H11	3.1965	4.1686	1.4935	3.6625	4.3924	5.5406	2.4286	3.8976	4.5906	2.4253

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.209	S1	S2	H8	109.671
S1	S2	H9	109.671	S1	S3	H7	111.209
S1	S3	H10	109.671	S1	S3	H11	109.671
S2	S1	S3	110.305	S2	S1	H4	109.558
S2	S1	H5	109.558	S3	S1	H4	109.558
S3	S1	H5	109.558	H4	S1	H5	108.271
H6	S2	H8	108.832	H6	S2	H9	108.832
H7	S3	H10	108.832	H7	S3	H11	108.832
H8	S2	H9	108.575	H10	S3	H11	108.575

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: MP3/daug-cc-pVDZ

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/daug-cc-pVDZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)