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	hartrees
Energy at 0K	-872.810071
Energy at 298.15K	-872.817377
HF Energy	-872.810071
Nuclear repulsion energy	191.391907

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2156	2133	137.88
2	A₁	2145	2122	6.33
3	A₁	2125	2103	59.10
4	A₁	913	903	62.74
5	A₁	887	878	0.23
6	A₁	849	840	168.65
7	A₁	543	538	5.47
8	A₁	373	369	0.62
9	A₁	90	89	1.31
10	A₂	2155	2132	0.00
11	A₂	904	895	0.00
12	A₂	685	678	0.00
13	A₂	402	398	0.00
14	A₂	61	60	0.00
15	B₁	2160	2137	217.06
16	B₁	2135	2112	21.11
17	B₁	909	900	62.17
18	B₁	571	565	10.06
19	B₁	298	295	17.49
20	B₁	82	82	0.06
21	B₂	2154	2132	53.47
22	B₂	2140	2118	106.75
23	B₂	907	897	31.07
24	B₂	836	827	286.18
25	B₂	686	679	280.04
26	B₂	448	444	4.69
27	B₂	416	411	16.13

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.899
Si2	0.000	1.948	-0.422
Si3	0.000	-1.948	-0.422
H4	1.212	0.000	1.789
H5	-1.212	0.000	1.789
H6	0.000	3.183	0.432
H7	0.000	-3.183	0.432
H8	1.216	1.979	-1.301
H9	-1.216	1.979	-1.301
H10	-1.216	-1.979	-1.301
H11	1.216	-1.979	-1.301

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3541	2.3541	1.5037	1.5037	3.2167	3.2167	3.1993	3.1993	3.1993	3.1993
Si2	2.3541		3.8969	3.1866	3.1866	1.5006	5.2015	1.5006	1.5006	4.2044	4.2044
Si3	2.3541	3.8969		3.1866	3.1866	5.2015	1.5006	4.2044	4.2044	1.5006	1.5006
H4	1.5037	3.1866	3.1866		2.4237	3.6661	3.6661	3.6697	4.4000	4.4000	3.6697
H5	1.5037	3.1866	3.1866	2.4237		3.6661	3.6661	4.4000	3.6697	3.6697	4.4000
H6	3.2167	1.5006	5.2015	3.6661	3.6661		6.3651	2.4349	2.4349	5.5788	5.5788
H7	3.2167	5.2015	1.5006	3.6661	3.6661	6.3651		5.5788	5.5788	2.4349	2.4349
H8	3.1993	1.5006	4.2044	3.6697	4.4000	2.4349	5.5788		2.4316	4.6455	3.9583
H9	3.1993	1.5006	4.2044	4.4000	3.6697	2.4349	5.5788	2.4316		3.9583	4.6455
H10	3.1993	4.2044	1.5006	4.4000	3.6697	5.5788	2.4349	4.6455	3.9583		2.4316
H11	3.1993	4.2044	1.5006	3.6697	4.4000	5.5788	2.4349	3.9583	4.6455	2.4316

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.187	S1	S2	H8	110.221
S1	S2	H9	110.221	S1	S3	H7	111.187
S1	S3	H10	110.221	S1	S3	H11	110.221
S2	S1	S3	111.725	S2	S1	H4	109.404
S2	S1	H5	109.404	S3	S1	H4	109.404
S3	S1	H5	109.404	H4	S1	H5	107.399
H6	S2	H8	108.447	H6	S2	H9	108.447
H7	S3	H10	108.447	H7	S3	H11	108.447
H8	S2	H9	108.238	H10	S3	H11	108.238

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: PBEPBE/6-311G*

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	-0.013
2	Si	0.098
3	Si	0.098
4	H	-0.011
5	H	-0.011
6	H	-0.022
7	H	-0.022
8	H	-0.029
9	H	-0.029
10	H	-0.029
11	H	-0.029

<r²>	210.072
(<r²>)^1/2	14.494

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: PBEPBE/6-311G*

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)