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	hartrees
Energy at 0K	-872.831264
Energy at 298.15K	-872.838564
HF Energy	-872.831264
Nuclear repulsion energy	191.919956

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2157	2139	120.46
2	A₁	2144	2126	6.32
3	A₁	2125	2108	51.83
4	A₁	910	902	57.16
5	A₁	882	875	0.05
6	A₁	843	836	150.22
7	A₁	538	534	3.94
8	A₁	373	370	0.46
9	A₁	89	88	1.06
10	A₂	2156	2139	0.00
11	A₂	902	894	0.00
12	A₂	678	672	0.00
13	A₂	394	391	0.00
14	A₂	66	65	0.00
15	B₁	2161	2143	188.19
16	B₁	2136	2119	18.53
17	B₁	907	900	55.51
18	B₁	565	560	7.95
19	B₁	295	293	13.53
20	B₁	85	84	0.06
21	B₂	2156	2138	48.73
22	B₂	2140	2123	97.60
23	B₂	904	896	29.48
24	B₂	829	822	272.62
25	B₂	677	671	256.45
26	B₂	447	444	4.15
27	B₂	409	405	14.45

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.900
Si2	0.000	1.941	-0.423
Si3	0.000	-1.941	-0.423
H4	1.211	0.000	1.785
H5	-1.211	0.000	1.785
H6	0.000	3.173	0.427
H7	0.000	-3.173	0.427
H8	1.214	1.966	-1.298
H9	-1.214	1.966	-1.298
H10	-1.214	-1.966	-1.298
H11	1.214	-1.966	-1.298

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3487	2.3487	1.4999	1.4999	3.2080	3.2080	3.1890	3.1890	3.1890	3.1890
Si2	2.3487		3.8815	3.1793	3.1793	1.4968	5.1838	1.4967	1.4967	4.1835	4.1835
Si3	2.3487	3.8815		3.1793	3.1793	5.1838	1.4968	4.1835	4.1835	1.4967	1.4967
H4	1.4999	3.1793	3.1793		2.4219	3.6577	3.6577	3.6566	4.3875	4.3875	3.6566
H5	1.4999	3.1793	3.1793	2.4219		3.6577	3.6577	4.3875	3.6566	3.6566	4.3875
H6	3.2080	1.4968	5.1838	3.6577	3.6577		6.3459	2.4302	2.4302	5.5549	5.5549
H7	3.2080	5.1838	1.4968	3.6577	3.6577	6.3459		5.5549	5.5549	2.4302	2.4302
H8	3.1890	1.4967	4.1835	3.6566	4.3875	2.4302	5.5549		2.4278	4.6210	3.9319
H9	3.1890	1.4967	4.1835	4.3875	3.6566	2.4302	5.5549	2.4278		3.9319	4.6210
H10	3.1890	4.1835	1.4967	4.3875	3.6566	5.5549	2.4302	4.6210	3.9319		2.4278
H11	3.1890	4.1835	1.4967	3.6566	4.3875	5.5549	2.4302	3.9319	4.6210	2.4278

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.128	S1	S2	H8	110.075
S1	S2	H9	110.075	S1	S3	H7	111.128
S1	S3	H10	110.075	S1	S3	H11	110.075
S2	S1	S3	111.441	S2	S1	H4	109.411
S2	S1	H5	109.411	S3	S1	H4	109.411
S3	S1	H5	109.411	H4	S1	H5	107.677
H6	S2	H8	108.550	H6	S2	H9	108.550
H7	S3	H10	108.550	H7	S3	H11	108.550
H8	S2	H9	108.396	H10	S3	H11	108.396

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: PBEPBE/6-311+G(3df,2p)

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	0.173
2	Si	0.090
3	Si	0.090
4	H	-0.052
5	H	-0.052
6	H	-0.042
7	H	-0.042
8	H	-0.041
9	H	-0.041
10	H	-0.041
11	H	-0.041

<r²>	208.745
(<r²>)^1/2	14.448

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: PBEPBE/6-311+G(3df,2p)

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)