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	hartrees
Energy at 0K	-868.300587
Energy at 298.15K
HF Energy	-868.300587
Nuclear repulsion energy	191.769961

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2193	2112	129.33
2	A₁	2174	2094	8.60
3	A₁	2160	2081	74.08
4	A₁	929	895	55.32
5	A₁	894	862	13.05
6	A₁	842	811	157.27
7	A₁	551	531	6.49
8	A₁	375	361	0.23
9	A₁	101	97	1.17
10	A₂	2188	2108	0.00
11	A₂	919	885	0.00
12	A₂	705	679	0.00
13	A₂	423	407	0.00
14	A₂	18i	18i	0.00
15	B₁	2195	2114	236.62
16	B₁	2177	2097	4.87
17	B₁	924	890	62.82
18	B₁	572	551	9.39
19	B₁	290	279	14.91
20	B₁	53	51	0.02
21	B₂	2191	2110	73.25
22	B₂	2168	2089	105.12
23	B₂	925	891	35.38
24	B₂	826	796	264.60
25	B₂	682	657	217.57
26	B₂	451	434	11.35
27	B₂	424	408	10.28

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.938
Si2	0.000	1.918	-0.437
Si3	0.000	-1.918	-0.437
H4	1.220	0.000	1.815
H5	-1.220	0.000	1.815
H6	0.000	3.182	0.372
H7	0.000	-3.182	0.372
H8	1.217	1.900	-1.316
H9	-1.217	1.900	-1.316
H10	-1.217	-1.900	-1.316
H11	1.217	-1.900	-1.316

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3600	2.3600	1.5026	1.5026	3.2320	3.2320	3.1890	3.1890	3.1890	3.1890
Si2	2.3600		3.8360	3.1999	3.1999	1.5010	5.1639	1.5010	1.5010	4.1026	4.1026
Si3	2.3600	3.8360		3.1999	3.1999	5.1639	1.5010	4.1026	4.1026	1.5010	1.5010
H4	1.5026	3.1999	3.1999		2.4404	3.7007	3.7007	3.6619	4.3989	4.3989	3.6619
H5	1.5026	3.1999	3.1999	2.4404		3.7007	3.7007	4.3989	3.6619	3.6619	4.3989
H6	3.2320	1.5010	5.1639	3.7007	3.7007		6.3641	2.4440	2.4440	5.4917	5.4917
H7	3.2320	5.1639	1.5010	3.7007	3.7007	6.3641		5.4917	5.4917	2.4440	2.4440
H8	3.1890	1.5010	4.1026	3.6619	4.3989	2.4440	5.4917		2.4341	4.5130	3.8003
H9	3.1890	1.5010	4.1026	4.3989	3.6619	2.4440	5.4917	2.4341		3.8003	4.5130
H10	3.1890	4.1026	1.5010	4.3989	3.6619	5.4917	2.4440	4.5130	3.8003		2.4341
H11	3.1890	4.1026	1.5010	3.6619	4.3989	5.4917	2.4440	3.8003	4.5130	2.4341

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.729	S1	S2	H8	109.347
S1	S2	H9	109.347	S1	S3	H7	111.729
S1	S3	H10	109.347	S1	S3	H11	109.347
S2	S1	S3	108.724	S2	S1	H4	109.878
S2	S1	H5	109.878	S3	S1	H4	109.878
S3	S1	H5	109.878	H4	S1	H5	108.597
H6	S2	H8	109.002	H6	S2	H9	109.002
H7	S3	H10	109.002	H7	S3	H11	109.002
H8	S2	H9	108.349	H10	S3	H11	108.349

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: HSEh1PBE/3-21G

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	0.004
2	Si	0.261
3	Si	0.261
4	H	-0.051
5	H	-0.051
6	H	-0.071
7	H	-0.071
8	H	-0.070
9	H	-0.070
10	H	-0.070
11	H	-0.070

<r²>	207.896
(<r²>)^1/2	14.419

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: HSEh1PBE/3-21G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)