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	hartrees
Energy at 0K	-872.941297
Energy at 298.15K
HF Energy	-872.941297
Nuclear repulsion energy	192.726109

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2215	2215	127.11
2	A₁	2205	2205	10.86
3	A₁	2186	2186	57.32
4	A₁	941	941	63.10
5	A₁	916	916	0.37
6	A₁	877	877	170.03
7	A₁	559	559	4.85
8	A₁	388	388	0.55
9	A₁	94	94	1.20
10	A₂	2213	2213	0.00
11	A₂	933	933	0.00
12	A₂	701	701	0.00
13	A₂	410	410	0.00
14	A₂	78	78	0.00
15	B₁	2218	2218	212.86
16	B₁	2196	2196	16.82
17	B₁	938	938	64.61
18	B₁	587	587	8.88
19	B₁	308	308	16.27
20	B₁	95	95	0.06
21	B₂	2214	2214	64.34
22	B₂	2200	2200	91.86
23	B₂	934	934	32.79
24	B₂	864	864	290.14
25	B₂	705	705	265.85
26	B₂	463	463	5.03
27	B₂	426	426	17.77

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.902
Si2	0.000	1.931	-0.423
Si3	0.000	-1.931	-0.423
H4	1.205	0.000	1.780
H5	-1.205	0.000	1.780
H6	0.000	3.159	0.417
H7	0.000	-3.159	0.417
H8	1.208	1.951	-1.293
H9	-1.208	1.951	-1.293
H10	-1.208	-1.951	-1.293
H11	1.208	-1.951	-1.293

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3415	2.3415	1.4913	1.4913	3.1958	3.1958	3.1752	3.1752	3.1752	3.1752
Si2	2.3415		3.8610	3.1678	3.1678	1.4884	5.1583	1.4885	1.4885	4.1567	4.1567
Si3	2.3415	3.8610		3.1678	3.1678	5.1583	1.4884	4.1567	4.1567	1.4885	1.4885
H4	1.4913	3.1678	3.1678		2.4104	3.6454	3.6454	3.6403	4.3673	4.3673	3.6403
H5	1.4913	3.1678	3.1678	2.4104		3.6454	3.6454	4.3673	3.6403	3.6403	4.3673
H6	3.1958	1.4884	5.1583	3.6454	3.6454		6.3177	2.4175	2.4175	5.5218	5.5218
H7	3.1958	5.1583	1.4884	3.6454	3.6454	6.3177		5.5218	5.5218	2.4175	2.4175
H8	3.1752	1.4885	4.1567	3.6403	4.3673	2.4175	5.5218		2.4152	4.5882	3.9011
H9	3.1752	1.4885	4.1567	4.3673	3.6403	2.4175	5.5218	2.4152		3.9011	4.5882
H10	3.1752	4.1567	1.4885	4.3673	3.6403	5.5218	2.4175	4.5882	3.9011		2.4152
H11	3.1752	4.1567	1.4885	3.6403	4.3673	5.5218	2.4175	3.9011	4.5882	2.4152

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.150	S1	S2	H8	109.993
S1	S2	H9	109.993	S1	S3	H7	111.150
S1	S3	H10	109.993	S1	S3	H11	109.993
S2	S1	S3	111.067	S2	S1	H4	109.471
S2	S1	H5	109.471	S3	S1	H4	109.471
S3	S1	H5	109.471	H4	S1	H5	107.827
H6	S2	H8	108.601	H6	S2	H9	108.601
H7	S3	H10	108.601	H7	S3	H11	108.601
H8	S2	H9	108.440	H10	S3	H11	108.440

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: PBE1PBE/aug-cc-pCVTZ

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	0.297
2	Si	0.668
3	Si	0.668
4	H	-0.175
5	H	-0.175
6	H	-0.257
7	H	-0.257
8	H	-0.192
9	H	-0.192
10	H	-0.192
11	H	-0.192

<r²>	206.958
(<r²>)^1/2	14.386

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: PBE1PBE/aug-cc-pCVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)