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	hartrees
Energy at 0K	-867.028813
Energy at 298.15K	-867.036320
HF Energy	-866.798630
Nuclear repulsion energy	189.293003

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2179	2179	127.88
2	A₁	2167	2167	4.84
3	A₁	2155	2155	75.85
4	A₁	944	944	79.25
5	A₁	914	914	0.02
6	A₁	876	876	210.86
7	A₁	564	564	9.67
8	A₁	355	355	0.17
9	A₁	101	101	1.37
10	A₂	2176	2176	0.00
11	A₂	936	936	0.00
12	A₂	717	717	0.00
13	A₂	434	434	0.00
14	A₂	81	81	0.00
15	B₁	2181	2181	230.86
16	B₁	2169	2169	0.86
17	B₁	940	940	87.09
18	B₁	592	592	11.23
19	B₁	298	298	20.16
20	B₁	94	94	0.00
21	B₂	2178	2178	62.78
22	B₂	2162	2162	108.21
23	B₂	938	938	38.92
24	B₂	866	866	318.46
25	B₂	712	712	291.37
26	B₂	450	450	25.66
27	B₂	414	414	1.45

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.945
Si2	0.000	1.957	-0.441
Si3	0.000	-1.957	-0.441
H4	1.228	0.000	1.818
H5	-1.228	0.000	1.818
H6	0.000	3.214	0.386
H7	0.000	-3.214	0.386
H8	1.223	1.938	-1.319
H9	-1.223	1.938	-1.319
H10	-1.223	-1.938	-1.319
H11	1.223	-1.938	-1.319

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3983	2.3983	1.5068	1.5068	3.2626	3.2626	3.2216	3.2216	3.2216	3.2216
Si2	2.3983		3.9139	3.2314	3.2314	1.5050	5.2370	1.5053	1.5053	4.1759	4.1759
Si3	2.3983	3.9139		3.2314	3.2314	5.2370	1.5050	4.1759	4.1759	1.5053	1.5053
H4	1.5068	3.2314	3.2314		2.4564	3.7270	3.7270	3.6876	4.4278	4.4278	3.6876
H5	1.5068	3.2314	3.2314	2.4564		3.7270	3.7270	4.4278	3.6876	3.6876	4.4278
H6	3.2626	1.5050	5.2370	3.7270	3.7270		6.4286	2.4557	2.4557	5.5634	5.5634
H7	3.2626	5.2370	1.5050	3.7270	3.7270	6.4286		5.5634	5.5634	2.4557	2.4557
H8	3.2216	1.5053	4.1759	3.6876	4.4278	2.4557	5.5634		2.4454	4.5834	3.8765
H9	3.2216	1.5053	4.1759	4.4278	3.6876	2.4557	5.5634	2.4454		3.8765	4.5834
H10	3.2216	4.1759	1.5053	4.4278	3.6876	5.5634	2.4557	4.5834	3.8765		2.4454
H11	3.2216	4.1759	1.5053	3.6876	4.4278	5.5634	2.4557	3.8765	4.5834	2.4454

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.346	S1	S2	H8	109.087
S1	S2	H9	109.087	S1	S3	H7	111.346
S1	S3	H10	109.087	S1	S3	H11	109.087
S2	S1	S3	109.371	S2	S1	H4	109.565
S2	S1	H5	109.565	S3	S1	H4	109.565
S3	S1	H5	109.565	H4	S1	H5	109.197
H6	S2	H8	109.324	H6	S2	H9	109.324
H7	S3	H10	109.324	H7	S3	H11	109.324
H8	S2	H9	108.628	H10	S3	H11	108.628

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)