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	hartrees
Energy at 0K	-873.392458
Energy at 298.15K	-873.399924
HF Energy	-873.392458
Nuclear repulsion energy	192.350452

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2234	2234	152.41
2	A₁	2230	2230	2.56
3	A₁	2207	2207	58.35
4	A₁	959	959	72.36
5	A₁	934	934	0.89
6	A₁	896	896	173.21
7	A₁	565	565	5.40
8	A₁	381	381	0.53
9	A₁	93	93	1.25
10	A₂	2232	2232	0.00
11	A₂	948	948	0.00
12	A₂	709	709	0.00
13	A₂	412	412	0.00
14	A₂	45	45	0.00
15	B₁	2237	2237	223.86
16	B₁	2212	2212	25.92
17	B₁	953	953	70.20
18	B₁	595	595	9.27
19	B₁	308	308	17.03
20	B₁	69	69	0.10
21	B₂	2232	2232	57.09
22	B₂	2226	2226	109.50
23	B₂	953	953	30.57
24	B₂	882	882	326.21
25	B₂	717	717	275.33
26	B₂	459	459	6.19
27	B₂	429	429	17.48

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.891
Si2	0.000	1.947	-0.419
Si3	0.000	-1.947	-0.419
H4	1.198	0.000	1.769
H5	-1.198	0.000	1.769
H6	0.000	3.161	0.433
H7	0.000	-3.161	0.433
H8	1.203	1.982	-1.286
H9	-1.203	1.982	-1.286
H10	-1.203	-1.982	-1.286
H11	1.203	-1.982	-1.286

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3471	2.3471	1.4858	1.4858	3.1936	3.1936	3.1802	3.1802	3.1802	3.1802
Si2	2.3471		3.8945	3.1651	3.1651	1.4829	5.1785	1.4828	1.4828	4.1995	4.1995
Si3	2.3471	3.8945		3.1651	3.1651	5.1785	1.4829	4.1995	4.1995	1.4828	1.4828
H4	1.4858	3.1651	3.1651		2.3967	3.6347	3.6347	3.6419	4.3621	4.3621	3.6419
H5	1.4858	3.1651	3.1651	2.3967		3.6347	3.6347	4.3621	3.6419	3.6419	4.3621
H6	3.1936	1.4829	5.1785	3.6347	3.6347		6.3213	2.4065	2.4065	5.5541	5.5541
H7	3.1936	5.1785	1.4829	3.6347	3.6347	6.3213		5.5541	5.5541	2.4065	2.4065
H8	3.1802	1.4828	4.1995	3.6419	4.3621	2.4065	5.5541		2.4050	4.6364	3.9639
H9	3.1802	1.4828	4.1995	4.3621	3.6419	2.4065	5.5541	2.4050		3.9639	4.6364
H10	3.1802	4.1995	1.4828	4.3621	3.6419	5.5541	2.4065	4.6364	3.9639		2.4050
H11	3.1802	4.1995	1.4828	3.6419	4.3621	5.5541	2.4065	3.9639	4.6364	2.4050

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.974	S1	S2	H8	110.228
S1	S2	H9	110.228	S1	S3	H7	110.974
S1	S3	H10	110.228	S1	S3	H11	110.228
S2	S1	S3	112.127	S2	S1	H4	109.271
S2	S1	H5	109.271	S3	S1	H4	109.271
S3	S1	H5	109.271	H4	S1	H5	107.521
H6	S2	H8	108.477	H6	S2	H9	108.477
H7	S3	H10	108.477	H7	S3	H11	108.477
H8	S2	H9	108.387	H10	S3	H11	108.387

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/aug-cc-pVQZ

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	0.527
2	Si	0.395
3	Si	0.395
4	H	-0.210
5	H	-0.210
6	H	-0.173
7	H	-0.173
8	H	-0.138
9	H	-0.138
10	H	-0.138
11	H	-0.138

<r²>	208.685
(<r²>)^1/2	14.446

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/aug-cc-pVQZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)