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	hartrees
Energy at 0K	-867.026346
Energy at 298.15K	-867.033799
HF Energy	-866.798290
Nuclear repulsion energy	189.049073

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	2156	2091
2	A₁	2143	2078
3	A₁	2131	2067
4	A₁	933	905
5	A₁	904	877
6	A₁	866	840
7	A₁	559	542
8	A₁	352	341
9	A₁	100	97
10	A₂	2153	2088
11	A₂	926	898
12	A₂	710	689
13	A₂	431	418
14	A₂	79	76
15	B₁	2158	2093
16	B₁	2146	2081
17	B₁	930	902
18	B₁	587	569
19	B₁	296	287
20	B₁	92	89
21	B₂	2155	2090
22	B₂	2137	2073
23	B₂	927	899
24	B₂	857	831
25	B₂	706	685
26	B₂	447	433
27	B₂	411	398

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.946
Si2	0.000	1.959	-0.442
Si3	0.000	-1.959	-0.442
H4	1.230	0.000	1.821
H5	-1.230	0.000	1.821
H6	0.000	3.219	0.387
H7	0.000	-3.219	0.387
H8	1.225	1.941	-1.322
H9	-1.225	1.941	-1.322
H10	-1.225	-1.941	-1.322
H11	1.225	-1.941	-1.322

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.4007	2.4007	1.5098	1.5098	3.2668	3.2668	3.2267	3.2267	3.2267	3.2267
Si2	2.4007		3.9175	3.2360	3.2360	1.5082	5.2434	1.5084	1.5084	4.1815	4.1815
Si3	2.4007	3.9175		3.2360	3.2360	5.2434	1.5082	4.1815	4.1815	1.5084	1.5084
H4	1.5098	3.2360	3.2360		2.4607	3.7322	3.7322	3.6939	4.4356	4.4356	3.6939
H5	1.5098	3.2360	3.2360	2.4607		3.7322	3.7322	4.4356	3.6939	3.6939	4.4356
H6	3.2668	1.5082	5.2434	3.7322	3.7322		6.4373	2.4602	2.4602	5.5718	5.5718
H7	3.2668	5.2434	1.5082	3.7322	3.7322	6.4373		5.5718	5.5718	2.4602	2.4602
H8	3.2267	1.5084	4.1815	3.6939	4.4356	2.4602	5.5718		2.4503	4.5911	3.8825
H9	3.2267	1.5084	4.1815	4.4356	3.6939	2.4602	5.5718	2.4503		3.8825	4.5911
H10	3.2267	4.1815	1.5084	4.4356	3.6939	5.5718	2.4602	4.5911	3.8825		2.4503
H11	3.2267	4.1815	1.5084	3.6939	4.4356	5.5718	2.4602	3.8825	4.5911	2.4503

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.334	S1	S2	H8	109.130
S1	S2	H9	109.130	S1	S3	H7	111.334
S1	S3	H10	109.130	S1	S3	H11	109.130
S2	S1	S3	109.358	S2	S1	H4	109.577
S2	S1	H5	109.577	S3	S1	H4	109.577
S3	S1	H5	109.577	H4	S1	H5	109.163
H6	S2	H8	109.286	H6	S2	H9	109.286
H7	S3	H10	109.286	H7	S3	H11	109.286
H8	S2	H9	108.631	H10	S3	H11	108.631

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: MP4/3-21G

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: MP4/3-21G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)