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	hartrees
Energy at 0K	-873.224906
Energy at 298.15K
HF Energy	-873.224906
Nuclear repulsion energy	191.641509

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2180	2143	195.62
2	A₁	2168	2131	11.54
3	A₁	2144	2107	92.16
4	A₁	933	917	70.24
5	A₁	908	893	0.58
6	A₁	871	856	185.46
7	A₁	552	542	6.06
8	A₁	377	371	0.66
9	A₁	93	91	1.56
10	A₂	2178	2140	0.00
11	A₂	923	907	0.00
12	A₂	690	678	0.00
13	A₂	407	400	0.00
14	A₂	39i	38i	0.00
15	B₁	2184	2147	319.10
16	B₁	2157	2120	35.36
17	B₁	928	912	69.51
18	B₁	581	571	9.61
19	B₁	305	299	21.34
20	B₁	52	51	0.03
21	B₂	2179	2141	89.13
22	B₂	2162	2125	141.50
23	B₂	926	910	33.40
24	B₂	857	842	310.86
25	B₂	701	689	294.74
26	B₂	454	446	6.19
27	B₂	422	415	17.37

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.908
Si2	0.000	1.943	-0.426
Si3	0.000	-1.943	-0.426
H4	1.208	0.000	1.791
H5	-1.208	0.000	1.791
H6	0.000	3.179	0.413
H7	0.000	-3.179	0.413
H8	1.211	1.960	-1.300
H9	-1.211	1.960	-1.300
H10	-1.211	-1.960	-1.300
H11	1.211	-1.960	-1.300

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3565	2.3565	1.4968	1.4968	3.2177	3.2177	3.1912	3.1912	3.1912	3.1912
Si2	2.3565		3.8855	3.1859	3.1859	1.4940	5.1903	1.4941	1.4941	4.1787	4.1787
Si3	2.3565	3.8855		3.1859	3.1859	5.1903	1.4940	4.1787	4.1787	1.4941	1.4941
H4	1.4968	3.1859	3.1859		2.4166	3.6701	3.6701	3.6604	4.3879	4.3879	3.6604
H5	1.4968	3.1859	3.1859	2.4166		3.6701	3.6701	4.3879	3.6604	3.6604	4.3879
H6	3.2177	1.4940	5.1903	3.6701	3.6701		6.3588	2.4266	2.4266	5.5508	5.5508
H7	3.2177	5.1903	1.4940	3.6701	3.6701	6.3588		5.5508	5.5508	2.4266	2.4266
H8	3.1912	1.4941	4.1787	3.6604	4.3879	2.4266	5.5508		2.4228	4.6079	3.9195
H9	3.1912	1.4941	4.1787	4.3879	3.6604	2.4266	5.5508	2.4228		3.9195	4.6079
H10	3.1912	4.1787	1.4941	4.3879	3.6604	5.5508	2.4266	4.6079	3.9195		2.4228
H11	3.1912	4.1787	1.4941	3.6604	4.3879	5.5508	2.4266	3.9195	4.6079	2.4228

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.399	S1	S2	H8	109.914
S1	S2	H9	109.914	S1	S3	H7	111.399
S1	S3	H10	109.914	S1	S3	H11	109.914
S2	S1	S3	111.062	S2	S1	H4	109.514
S2	S1	H5	109.514	S3	S1	H4	109.514
S3	S1	H5	109.514	H4	S1	H5	107.656
H6	S2	H8	108.600	H6	S2	H9	108.600
H7	S3	H10	108.600	H7	S3	H11	108.600
H8	S2	H9	108.343	H10	S3	H11	108.343

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B97D3/6-31+G**

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	0.096
2	Si	0.248
3	Si	0.248
4	H	-0.066
5	H	-0.066
6	H	-0.074
7	H	-0.074
8	H	-0.078
9	H	-0.078
10	H	-0.078
11	H	-0.078

<r²>	209.397
(<r²>)^1/2	14.471

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B97D3/6-31+G**

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)