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	hartrees
Energy at 0K	-873.321712
Energy at 298.15K
HF Energy	-873.321712
Nuclear repulsion energy	192.116518

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2159	2159	143.40
2	A₁	2146	2146	10.78
3	A₁	2124	2124	69.62
4	A₁	930	930	62.82
5	A₁	904	904	0.63
6	A₁	868	868	176.79
7	A₁	550	550	4.93
8	A₁	373	373	0.51
9	A₁	93	93	1.23
10	A₂	2156	2156	0.00
11	A₂	922	922	0.00
12	A₂	687	687	0.00
13	A₂	403	403	0.00
14	A₂	50	50	0.00
15	B₁	2162	2162	240.69
16	B₁	2137	2137	24.30
17	B₁	926	926	65.87
18	B₁	577	577	8.69
19	B₁	302	302	17.30
20	B₁	83	83	0.03
21	B₂	2157	2157	72.10
22	B₂	2141	2141	108.31
23	B₂	923	923	36.63
24	B₂	854	854	297.97
25	B₂	694	694	261.84
26	B₂	446	446	7.62
27	B₂	416	416	14.07

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.916
Si2	0.000	1.931	-0.429
Si3	0.000	-1.931	-0.429
H4	1.208	0.000	1.794
H5	-1.208	0.000	1.794
H6	0.000	3.172	0.398
H7	0.000	-3.172	0.398
H8	1.209	1.939	-1.301
H9	-1.209	1.939	-1.301
H10	-1.209	-1.939	-1.301
H11	1.209	-1.939	-1.301

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3531	2.3531	1.4939	1.4939	3.2143	3.2143	3.1834	3.1834	3.1834	3.1834
Si2	2.3531		3.8628	3.1830	3.1830	1.4910	5.1702	1.4910	1.4910	4.1477	4.1477
Si3	2.3531	3.8628		3.1830	3.1830	5.1702	1.4910	4.1477	4.1477	1.4910	1.4910
H4	1.4939	3.1830	3.1830		2.4160	3.6707	3.6707	3.6523	4.3799	4.3799	3.6523
H5	1.4939	3.1830	3.1830	2.4160		3.6707	3.6707	4.3799	3.6523	3.6523	4.3799
H6	3.2143	1.4910	5.1702	3.6707	3.6707		6.3447	2.4225	2.4225	5.5203	5.5203
H7	3.2143	5.1702	1.4910	3.6707	3.6707	6.3447		5.5203	5.5203	2.4225	2.4225
H8	3.1834	1.4910	4.1477	3.6523	4.3799	2.4225	5.5203		2.4188	4.5706	3.8781
H9	3.1834	1.4910	4.1477	4.3799	3.6523	2.4225	5.5203	2.4188		3.8781	4.5706
H10	3.1834	4.1477	1.4910	4.3799	3.6523	5.5203	2.4225	4.5706	3.8781		2.4188
H11	3.1834	4.1477	1.4910	3.6523	4.3799	5.5203	2.4225	3.8781	4.5706	2.4188

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.501	S1	S2	H8	109.774
S1	S2	H9	109.774	S1	S3	H7	111.501
S1	S3	H10	109.774	S1	S3	H11	109.774
S2	S1	S3	110.326	S2	S1	H4	109.638
S2	S1	H5	109.638	S3	S1	H4	109.638
S3	S1	H5	109.638	H4	S1	H5	107.926
H6	S2	H8	108.656	H6	S2	H9	108.656
H7	S3	H10	108.656	H7	S3	H11	108.656
H8	S2	H9	108.413	H10	S3	H11	108.413

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B97D3/aug-cc-pCVTZ

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	0.361
2	Si	0.809
3	Si	0.809
4	H	-0.221
5	H	-0.221
6	H	-0.309
7	H	-0.309
8	H	-0.229
9	H	-0.229
10	H	-0.229
11	H	-0.229

<r²>	207.899
(<r²>)^1/2	14.419

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B97D3/aug-cc-pCVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)