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	hartrees
Energy at 0K	-872.935387
Energy at 298.15K	-872.942768
HF Energy	-872.935387
Nuclear repulsion energy	191.839348

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2201	2201	131.47
2	A₁	2189	2189	10.18
3	A₁	2172	2172	60.39
4	A₁	933	933	62.22
5	A₁	909	909	0.09
6	A₁	864	864	166.07
7	A₁	553	553	4.69
8	A₁	384	384	0.53
9	A₁	89	89	1.24
10	A₂	2198	2198	0.00
11	A₂	928	928	0.00
12	A₂	696	696	0.00
13	A₂	405	405	0.00
14	A₂	37	37	0.00
15	B₁	2205	2205	225.18
16	B₁	2183	2183	12.10
17	B₁	934	934	61.62
18	B₁	583	583	8.58
19	B₁	301	301	16.01
20	B₁	75	75	0.05
21	B₂	2199	2199	64.44
22	B₂	2184	2184	96.62
23	B₂	929	929	32.84
24	B₂	852	852	272.74
25	B₂	696	696	273.41
26	B₂	460	460	4.75
27	B₂	421	421	17.45

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.908
Si2	0.000	1.937	-0.426
Si3	0.000	-1.937	-0.426
H4	1.214	0.000	1.790
H5	-1.214	0.000	1.790
H6	0.000	3.173	0.420
H7	0.000	-3.173	0.420
H8	1.216	1.952	-1.301
H9	-1.216	1.952	-1.301
H10	-1.216	-1.952	-1.301
H11	1.216	-1.952	-1.301

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3516	2.3516	1.5009	1.5009	3.2109	3.2109	3.1894	3.1894	3.1894	3.1894
Si2	2.3516		3.8730	3.1837	3.1837	1.4984	5.1795	1.4986	1.4986	4.1676	4.1676
Si3	2.3516	3.8730		3.1837	3.1837	5.1795	1.4984	4.1676	4.1676	1.4986	1.4986
H4	1.5009	3.1837	3.1837		2.4286	3.6639	3.6639	3.6563	4.3905	4.3905	3.6563
H5	1.5009	3.1837	3.1837	2.4286		3.6639	3.6639	4.3905	3.6563	3.6563	4.3905
H6	3.2109	1.4984	5.1795	3.6639	3.6639		6.3470	2.4355	2.4355	5.5422	5.5422
H7	3.2109	5.1795	1.4984	3.6639	3.6639	6.3470		5.5422	5.5422	2.4355	2.4355
H8	3.1894	1.4986	4.1676	3.6563	4.3905	2.4355	5.5422		2.4329	4.6007	3.9048
H9	3.1894	1.4986	4.1676	4.3905	3.6563	2.4355	5.5422	2.4329		3.9048	4.6007
H10	3.1894	4.1676	1.4986	4.3905	3.6563	5.5422	2.4355	4.6007	3.9048		2.4329
H11	3.1894	4.1676	1.4986	3.6563	4.3905	5.5422	2.4355	3.9048	4.6007	2.4329

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.078	S1	S2	H8	109.878
S1	S2	H9	109.878	S1	S3	H7	111.078
S1	S3	H10	109.878	S1	S3	H11	109.878
S2	S1	S3	110.872	S2	S1	H4	109.478
S2	S1	H5	109.478	S3	S1	H4	109.478
S3	S1	H5	109.478	H4	S1	H5	108.006
H6	S2	H8	108.711	H6	S2	H9	108.711
H7	S3	H10	108.711	H7	S3	H11	108.711
H8	S2	H9	108.531	H10	S3	H11	108.531

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: HSEh1PBE/daug-cc-pVDZ

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	-1.769
2	Si	-1.327
3	Si	-1.327
4	H	0.649
5	H	0.649
6	H	0.428
7	H	0.428
8	H	0.567
9	H	0.567
10	H	0.567
11	H	0.567

<r²>	208.493
(<r²>)^1/2	14.439

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: HSEh1PBE/daug-cc-pVDZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)