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	hartrees
Energy at 0K	-873.342220
Energy at 298.15K	-873.349794
HF Energy	-873.342220
Nuclear repulsion energy	192.461485

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2226	2135	135.18
2	A₁	2215	2124	8.47
3	A₁	2195	2106	59.06
4	A₁	947	909	66.92
5	A₁	923	885	0.26
6	A₁	883	847	171.11
7	A₁	562	540	4.95
8	A₁	386	371	0.49
9	A₁	96	92	1.18
10	A₂	2224	2133	0.00
11	A₂	939	901	0.00
12	A₂	705	677	0.00
13	A₂	416	399	0.00
14	A₂	76	73	0.00
15	B₁	2229	2138	215.50
16	B₁	2205	2115	20.00
17	B₁	944	905	66.41
18	B₁	590	566	8.58
19	B₁	312	299	16.16
20	B₁	93	90	0.04
21	B₂	2224	2133	58.88
22	B₂	2210	2120	101.56
23	B₂	941	902	32.43
24	B₂	869	834	297.64
25	B₂	711	682	273.85
26	B₂	464	445	5.18
27	B₂	432	414	16.47

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.896
Si2	0.000	1.939	-0.421
Si3	0.000	-1.939	-0.421
H4	1.204	0.000	1.775
H5	-1.204	0.000	1.775
H6	0.000	3.159	0.429
H7	0.000	-3.159	0.429
H8	1.207	1.966	-1.290
H9	-1.207	1.966	-1.290
H10	-1.207	-1.966	-1.290
H11	1.207	-1.966	-1.290

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3445	2.3445	1.4906	1.4906	3.1938	3.1938	3.1789	3.1789	3.1789	3.1789
Si2	2.3445		3.8781	3.1677	3.1677	1.4877	5.1690	1.4877	1.4877	4.1789	4.1789
Si3	2.3445	3.8781		3.1677	3.1677	5.1690	1.4877	4.1789	4.1789	1.4877	1.4877
H4	1.4906	3.1677	3.1677		2.4083	3.6391	3.6391	3.6419	4.3678	4.3678	3.6419
H5	1.4906	3.1677	3.1677	2.4083		3.6391	3.6391	4.3678	3.6419	3.6419	4.3678
H6	3.1938	1.4877	5.1690	3.6391	3.6391		6.3190	2.4164	2.4164	5.5396	5.5396
H7	3.1938	5.1690	1.4877	3.6391	3.6391	6.3190		5.5396	5.5396	2.4164	2.4164
H8	3.1789	1.4877	4.1789	3.6419	4.3678	2.4164	5.5396		2.4145	4.6144	3.9323
H9	3.1789	1.4877	4.1789	4.3678	3.6419	2.4164	5.5396	2.4145		3.9323	4.6144
H10	3.1789	4.1789	1.4877	4.3678	3.6419	5.5396	2.4164	4.6144	3.9323		2.4145
H11	3.1789	4.1789	1.4877	3.6419	4.3678	5.5396	2.4164	3.9323	4.6144	2.4145

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.918	S1	S2	H8	110.085
S1	S2	H9	110.085	S1	S3	H7	110.918
S1	S3	H10	110.085	S1	S3	H11	110.085
S2	S1	S3	111.597	S2	S1	H4	109.349
S2	S1	H5	109.349	S3	S1	H4	109.349
S3	S1	H5	109.349	H4	S1	H5	107.766
H6	S2	H8	108.608	H6	S2	H9	108.608
H7	S3	H10	108.608	H7	S3	H11	108.608
H8	S2	H9	108.478	H10	S3	H11	108.478

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: mPW1PW91/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	0.023
2	Si	0.062
3	Si	0.062
4	H	-0.021
5	H	-0.021
6	H	-0.018
7	H	-0.018
8	H	-0.017
9	H	-0.017
10	H	-0.017
11	H	-0.017

<r²>	207.902
(<r²>)^1/2	14.419

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: mPW1PW91/cc-pVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)