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	hartrees
Energy at 0K	-863.299923
Energy at 298.15K	-863.307931
HF Energy	-863.299923
Nuclear repulsion energy	199.042867

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2724	2724	33.22
2	A₁	2673	2673	20.60
3	A₁	2671	2671	0.26
4	A₁	1149	1149	115.02
5	A₁	1136	1136	0.38
6	A₁	1072	1072	192.57
7	A₁	675	675	15.41
8	A₁	487	487	3.05
9	A₁	133	133	2.37
10	A₂	2722	2722	0.00
11	A₂	1137	1137	0.00
12	A₂	866	866	0.00
13	A₂	559	559	0.00
14	A₂	44	44	0.00
15	B₁	2724	2724	58.54
16	B₁	2705	2705	10.11
17	B₁	1139	1139	95.36
18	B₁	706	706	17.59
19	B₁	417	417	31.61
20	B₁	55	55	0.09
21	B₂	2724	2724	13.37
22	B₂	2671	2671	18.52
23	B₂	1143	1143	27.78
24	B₂	1055	1055	329.30
25	B₂	884	884	370.20
26	B₂	603	603	4.55
27	B₂	569	569	26.53

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.828
Si2	0.000	1.895	-0.391
Si3	0.000	-1.895	-0.391
H4	1.153	0.000	1.698
H5	-1.153	0.000	1.698
H6	0.000	3.061	0.458
H7	0.000	-3.061	0.458
H8	1.163	1.974	-1.241
H9	-1.163	1.974	-1.241
H10	-1.163	-1.974	-1.241
H11	1.163	-1.974	-1.241

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.2530	2.2530	1.4442	1.4442	3.0835	3.0835	3.0868	3.0868	3.0868	3.0868
Si2	2.2530		3.7895	3.0467	3.0467	1.4425	5.0280	1.4426	1.4426	4.1278	4.1278
Si3	2.2530	3.7895		3.0467	3.0467	5.0280	1.4425	4.1278	4.1278	1.4426	1.4426
H4	1.4442	3.0467	3.0467		2.3060	3.4983	3.4983	3.5399	4.2302	4.2302	3.5399
H5	1.4442	3.0467	3.0467	2.3060		3.4983	3.4983	4.2302	3.5399	3.5399	4.2302
H6	3.0835	1.4425	5.0280	3.4983	3.4983		6.1223	2.3282	2.3282	5.4393	5.4393
H7	3.0835	5.0280	1.4425	3.4983	3.4983	6.1223		5.4393	5.4393	2.3282	2.3282
H8	3.0868	1.4426	4.1278	3.5399	4.2302	2.3282	5.4393		2.3261	4.5815	3.9471
H9	3.0868	1.4426	4.1278	4.2302	3.5399	2.3282	5.4393	2.3261		3.9471	4.5815
H10	3.0868	4.1278	1.4426	4.2302	3.5399	5.4393	2.3282	4.5815	3.9471		2.3261
H11	3.0868	4.1278	1.4426	3.5399	4.2302	5.4393	2.3282	3.9471	4.5815	2.3261

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.200	S1	S2	H8	111.390
S1	S2	H9	111.390	S1	S3	H7	111.200
S1	S3	H10	111.390	S1	S3	H11	111.390
S2	S1	S3	114.484	S2	S1	H4	109.016
S2	S1	H5	109.016	S3	S1	H4	109.016
S3	S1	H5	109.016	H4	S1	H5	105.946
H6	S2	H8	107.603	H6	S2	H9	107.603
H7	S3	H10	107.603	H7	S3	H11	107.603
H8	S2	H9	107.455	H10	S3	H11	107.455

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/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	0.261
2	Si	0.384
3	Si	0.384
4	H	-0.127
5	H	-0.127
6	H	-0.128
7	H	-0.128
8	H	-0.130
9	H	-0.130
10	H	-0.130
11	H	-0.130

<r²>	195.019
(<r²>)^1/2	13.965

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/STO-3G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)