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	hartrees
Energy at 0K	-872.932767
Energy at 298.15K	-872.940436
HF Energy	-872.800020
Nuclear repulsion energy	192.323144

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	?_a	959	959	37.03
2	?_a	959	959	0.01
3	A₁	2246	2246	140.61
4	A₁	2237	2237	17.97
5	A₁	2215	2215	68.20
6	A₁	966	966	72.76
7	A₁	942	942	1.32
8	A₁	903	903	191.63
9	A₁	571	571	6.39
10	A₁	386	386	0.58
11	A₁	96	96	1.40
12	A₂	2243	2243	0.00
13	A₂	716	716	0.00
14	A₂	423	423	0.00
15	A₂	90	90	0.00
16	B₁	2248	2248	241.78
17	B₁	2224	2224	25.96
18	B₁	963	963	76.36
19	B₁	601	601	9.79
20	B₁	320	320	20.21
21	B₁	107	107	0.05
22	B₂	2245	2245	81.35
23	B₂	2233	2233	95.84
24	B₂	891	891	323.77
25	B₂	727	727	296.29
26	B₂	464	464	8.91
27	B₂	438	438	16.24

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.902
Si2	0.000	1.942	-0.423
Si3	0.000	-1.942	-0.423
H4	1.200	0.000	1.777
H5	-1.200	0.000	1.777
H6	0.000	3.162	0.419
H7	0.000	-3.162	0.419
H8	1.203	1.964	-1.290
H9	-1.203	1.964	-1.290
H10	-1.203	-1.964	-1.290
H11	1.203	-1.964	-1.290

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3506	2.3506	1.4858	1.4858	3.1983	3.1983	3.1788	3.1788	3.1788	3.1788
Si2	2.3506		3.8833	3.1706	3.1706	1.4824	5.1723	1.4828	1.4828	4.1771	4.1771
Si3	2.3506	3.8833		3.1706	3.1706	5.1723	1.4824	4.1771	4.1771	1.4828	1.4828
H4	1.4858	3.1706	3.1706		2.4010	3.6444	3.6444	3.6415	4.3632	4.3632	3.6415
H5	1.4858	3.1706	3.1706	2.4010		3.6444	3.6444	4.3632	3.6415	3.6415	4.3632
H6	3.1983	1.4824	5.1723	3.6444	3.6444		6.3233	2.4087	2.4087	5.5348	5.5348
H7	3.1983	5.1723	1.4824	3.6444	3.6444	6.3233		5.5348	5.5348	2.4087	2.4087
H8	3.1788	1.4828	4.1771	3.6415	4.3632	2.4087	5.5348		2.4063	4.6056	3.9270
H9	3.1788	1.4828	4.1771	4.3632	3.6415	2.4087	5.5348	2.4063		3.9270	4.6056
H10	3.1788	4.1771	1.4828	4.3632	3.6415	5.5348	2.4087	4.6056	3.9270		2.4063
H11	3.1788	4.1771	1.4828	3.6415	4.3632	5.5348	2.4087	3.9270	4.6056	2.4063

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.076	S1	S2	H8	109.969
S1	S2	H9	109.969	S1	S3	H7	111.076
S1	S3	H10	109.969	S1	S3	H11	109.969
S2	S1	S3	111.384	S2	S1	H4	109.397
S2	S1	H5	109.397	S3	S1	H4	109.397
S3	S1	H5	109.397	H4	S1	H5	107.797
H6	S2	H8	108.649	H6	S2	H9	108.649
H7	S3	H10	108.649	H7	S3	H11	108.649
H8	S2	H9	108.468	H10	S3	H11	108.468

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B2PLYP/daug-cc-pVTZ

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	-0.302
2	Si	0.347
3	Si	0.347
4	H	0.221
5	H	0.221
6	H	-0.273
7	H	-0.273
8	H	-0.072
9	H	-0.072
10	H	-0.072
11	H	-0.072

<r²>	208.676
(<r²>)^1/2	14.446

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B2PLYP/daug-cc-pVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)