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	hartrees
Energy at 0K	-863.141390
Energy at 298.15K	-863.149542
HF Energy	-863.141390
Nuclear repulsion energy	199.220850

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2709	2398	31.35
2	A₁	2658	2352	18.17
3	A₁	2656	2351	1.23
4	A₁	1140	1009	102.33
5	A₁	1126	997	0.13
6	A₁	1065	943	186.50
7	A₁	679	601	14.18
8	A₁	491	435	2.86
9	A₁	136	121	2.14
10	A₂	2708	2397	0.00
11	A₂	1131	1001	0.00
12	A₂	867	768	0.00
13	A₂	563	498	0.00
14	A₂	84	74	0.00
15	B₁	2710	2398	54.90
16	B₁	2691	2382	9.49
17	B₁	1133	1003	88.89
18	B₁	706	625	16.21
19	B₁	422	373	29.41
20	B₁	91	80	0.04
21	B₂	2709	2398	12.56
22	B₂	2656	2350	17.54
23	B₂	1134	1004	29.89
24	B₂	1050	929	296.12
25	B₂	886	784	353.73
26	B₂	607	537	4.56
27	B₂	575	509	24.55

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.830
Si2	0.000	1.889	-0.391
Si3	0.000	-1.889	-0.391
H4	1.156	0.000	1.700
H5	-1.156	0.000	1.700
H6	0.000	3.060	0.457
H7	0.000	-3.060	0.457
H8	1.166	1.964	-1.243
H9	-1.166	1.964	-1.243
H10	-1.166	-1.964	-1.243
H11	1.166	-1.964	-1.243

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.2495	2.2495	1.4470	1.4470	3.0821	3.0821	3.0842	3.0842	3.0842	3.0842
Si2	2.2495		3.7785	3.0461	3.0461	1.4455	5.0210	1.4455	1.4455	4.1150	4.1150
Si3	2.2495	3.7785		3.0461	3.0461	5.0210	1.4455	4.1150	4.1150	1.4455	1.4455
H4	1.4470	3.0461	3.0461		2.3127	3.4988	3.4988	3.5377	4.2318	4.2318	3.5377
H5	1.4470	3.0461	3.0461	2.3127		3.4988	3.4988	4.2318	3.5377	3.5377	4.2318
H6	3.0821	1.4455	5.0210	3.4988	3.4988		6.1190	2.3340	2.3340	5.4302	5.4302
H7	3.0821	5.0210	1.4455	3.4988	3.4988	6.1190		5.4302	5.4302	2.3340	2.3340
H8	3.0842	1.4455	4.1150	3.5377	4.2318	2.3340	5.4302		2.3319	4.5685	3.9285
H9	3.0842	1.4455	4.1150	4.2318	3.5377	2.3340	5.4302	2.3319		3.9285	4.5685
H10	3.0842	4.1150	1.4455	4.2318	3.5377	5.4302	2.3340	4.5685	3.9285		2.3319
H11	3.0842	4.1150	1.4455	3.5377	4.2318	5.4302	2.3340	3.9285	4.5685	2.3319

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.181	S1	S2	H8	111.299
S1	S2	H9	111.299	S1	S3	H7	111.181
S1	S3	H10	111.299	S1	S3	H11	111.299
S2	S1	S3	114.246	S2	S1	H4	109.047
S2	S1	H5	109.047	S3	S1	H4	109.047
S3	S1	H5	109.047	H4	S1	H5	106.090
H6	S2	H8	107.675	H6	S2	H9	107.675
H7	S3	H10	107.675	H7	S3	H11	107.675
H8	S2	H9	107.526	H10	S3	H11	107.526

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B3PW91/STO-3G

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	0.242
2	Si	0.355
3	Si	0.355
4	H	-0.118
5	H	-0.118
6	H	-0.118
7	H	-0.118
8	H	-0.120
9	H	-0.120
10	H	-0.120
11	H	-0.120

<r²>	194.218
(<r²>)^1/2	13.936

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B3PW91/STO-3G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)