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	hartrees
Energy at 0K	-873.378766
Energy at 298.15K	-873.386240
HF Energy	-873.378766
Nuclear repulsion energy	192.014418

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2234	2163	143.76
2	A₁	2225	2155	7.76
3	A₁	2203	2133	61.25
4	A₁	957	927	72.56
5	A₁	933	903	0.42
6	A₁	893	864	173.27
7	A₁	563	545	5.19
8	A₁	381	368	0.49
9	A₁	94	91	1.21
10	A₂	2232	2161	0.00
11	A₂	947	917	0.00
12	A₂	707	685	0.00
13	A₂	412	399	0.00
14	A₂	48	46	0.00
15	B₁	2237	2166	221.82
16	B₁	2211	2141	25.02
17	B₁	951	921	69.63
18	B₁	593	574	8.75
19	B₁	307	297	16.64
20	B₁	71	68	0.07
21	B₂	2232	2161	58.99
22	B₂	2221	2151	106.75
23	B₂	951	921	30.64
24	B₂	879	851	322.51
25	B₂	715	693	278.69
26	B₂	459	445	5.64
27	B₂	428	415	17.09

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.892
Si2	0.000	1.951	-0.420
Si3	0.000	-1.951	-0.420
H4	1.201	0.000	1.772
H5	-1.201	0.000	1.772
H6	0.000	3.166	0.436
H7	0.000	-3.166	0.436
H8	1.205	1.987	-1.288
H9	-1.205	1.987	-1.288
H10	-1.205	-1.987	-1.288
H11	1.205	-1.987	-1.288

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3508	2.3508	1.4887	1.4887	3.1982	3.1982	3.1859	3.1859	3.1859	3.1859
Si2	2.3508		3.9021	3.1703	3.1703	1.4858	5.1877	1.4857	1.4857	4.2084	4.2084
Si3	2.3508	3.9021		3.1703	3.1703	5.1877	1.4858	4.2084	4.2084	1.4857	1.4857
H4	1.4887	3.1703	3.1703		2.4014	3.6396	3.6396	3.6482	4.3699	4.3699	3.6482
H5	1.4887	3.1703	3.1703	2.4014		3.6396	3.6396	4.3699	3.6482	3.6482	4.3699
H6	3.1982	1.4858	5.1877	3.6396	3.6396		6.3312	2.4114	2.4114	5.5650	5.5650
H7	3.1982	5.1877	1.4858	3.6396	3.6396	6.3312		5.5650	5.5650	2.4114	2.4114
H8	3.1859	1.4857	4.2084	3.6482	4.3699	2.4114	5.5650		2.4099	4.6468	3.9731
H9	3.1859	1.4857	4.2084	4.3699	3.6482	2.4114	5.5650	2.4099		3.9731	4.6468
H10	3.1859	4.2084	1.4857	4.3699	3.6482	5.5650	2.4114	4.6468	3.9731		2.4099
H11	3.1859	4.2084	1.4857	3.6482	4.3699	5.5650	2.4114	3.9731	4.6468	2.4099

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.925	S1	S2	H8	110.237
S1	S2	H9	110.237	S1	S3	H7	110.925
S1	S3	H10	110.237	S1	S3	H11	110.237
S2	S1	S3	112.185	S2	S1	H4	109.256
S2	S1	H5	109.256	S3	S1	H4	109.256
S3	S1	H5	109.256	H4	S1	H5	107.520
H6	S2	H8	108.490	H6	S2	H9	108.490
H7	S3	H10	108.490	H7	S3	H11	108.490
H8	S2	H9	108.392	H10	S3	H11	108.392

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/cc-pVTZ

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	0.090
2	Si	0.150
3	Si	0.150
4	H	-0.053
5	H	-0.053
6	H	-0.047
7	H	-0.047
8	H	-0.047
9	H	-0.047
10	H	-0.047
11	H	-0.047

<r²>	209.394
(<r²>)^1/2	14.470

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/cc-pVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)