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	hartrees
Energy at 0K	-872.799450
Energy at 298.15K
HF Energy	-872.799450
Nuclear repulsion energy	191.465274

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2150	2150	118.48
2	A₁	2134	2134	5.36
3	A₁	2119	2119	52.77
4	A₁	908	908	57.82
5	A₁	880	880	0.10
6	A₁	841	841	144.74
7	A₁	538	538	3.65
8	A₁	373	373	0.40
9	A₁	90	90	1.00
10	A₂	2150	2150	0.00
11	A₂	899	899	0.00
12	A₂	678	678	0.00
13	A₂	392	392	0.00
14	A₂	58	58	0.00
15	B₁	2155	2155	185.89
16	B₁	2132	2132	16.16
17	B₁	904	904	53.97
18	B₁	565	565	7.21
19	B₁	291	291	12.76
20	B₁	78	78	0.05
21	B₂	2149	2149	44.40
22	B₂	2131	2131	99.79
23	B₂	902	902	28.33
24	B₂	827	827	263.89
25	B₂	677	677	246.84
26	B₂	448	448	3.25
27	B₂	408	408	13.59

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.901
Si2	0.000	1.943	-0.423
Si3	0.000	-1.943	-0.423
H4	1.218	0.000	1.790
H5	-1.218	0.000	1.790
H6	0.000	3.181	0.434
H7	0.000	-3.181	0.434
H8	1.221	1.969	-1.303
H9	-1.221	1.969	-1.303
H10	-1.221	-1.969	-1.303
H11	1.221	-1.969	-1.303

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3514	2.3514	1.5083	1.5083	3.2145	3.2145	3.1976	3.1976	3.1976	3.1976
Si2	2.3514		3.8863	3.1874	3.1874	1.5055	5.1949	1.5053	1.5053	4.1916	4.1916
Si3	2.3514	3.8863		3.1874	3.1874	5.1949	1.5055	4.1916	4.1916	1.5053	1.5053
H4	1.5083	3.1874	3.1874		2.4364	3.6658	3.6658	3.6667	4.4040	4.4040	3.6667
H5	1.5083	3.1874	3.1874	2.4364		3.6658	3.6658	4.4040	3.6667	3.6667	4.4040
H6	3.2145	1.5055	5.1949	3.6658	3.6658		6.3610	2.4449	2.4449	5.5701	5.5701
H7	3.2145	5.1949	1.5055	3.6658	3.6658	6.3610		5.5701	5.5701	2.4449	2.4449
H8	3.1976	1.5053	4.1916	3.6667	4.4040	2.4449	5.5701		2.4424	4.6337	3.9378
H9	3.1976	1.5053	4.1916	4.4040	3.6667	2.4449	5.5701	2.4424		3.9378	4.6337
H10	3.1976	4.1916	1.5053	4.4040	3.6667	5.5701	2.4449	4.6337	3.9378		2.4424
H11	3.1976	4.1916	1.5053	3.6667	4.4040	5.5701	2.4449	3.9378	4.6337	2.4424

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.000	S1	S2	H8	110.074
S1	S2	H9	110.074	S1	S3	H7	111.000
S1	S3	H10	110.074	S1	S3	H11	110.074
S2	S1	S3	111.454	S2	S1	H4	109.394
S2	S1	H5	109.394	S3	S1	H4	109.394
S3	S1	H5	109.394	H4	S1	H5	107.735
H6	S2	H8	108.594	H6	S2	H9	108.594
H7	S3	H10	108.594	H7	S3	H11	108.594
H8	S2	H9	108.442	H10	S3	H11	108.442

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: PBEPBE/cc-pV(D+d)Z

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	0.006
2	Si	0.081
3	Si	0.081
4	H	-0.016
5	H	-0.016
6	H	-0.020
7	H	-0.020
8	H	-0.024
9	H	-0.024
10	H	-0.024
11	H	-0.024

<r²>	209.191
(<r²>)^1/2	14.463

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: PBEPBE/cc-pV(D+d)Z

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)