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	hartrees
Energy at 0K	-873.295888
Energy at 298.15K	-873.303310
HF Energy	-873.295888
Nuclear repulsion energy	192.081896

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2259	2166	207.63
2	A₁	2251	2158	9.86
3	A₁	2227	2135	83.43
4	A₁	964	925	81.62
5	A₁	939	900	0.58
6	A₁	899	862	182.42
7	A₁	569	545	6.93
8	A₁	387	371	0.72
9	A₁	96	92	1.37
10	A₂	2257	2164	0.00
11	A₂	952	913	0.00
12	A₂	717	688	0.00
13	A₂	418	401	0.00
14	A₂	21	21	0.00
15	B₁	2262	2169	327.18
16	B₁	2236	2143	36.77
17	B₁	957	917	78.78
18	B₁	599	574	9.94
19	B₁	310	297	19.03
20	B₁	61	58	0.10
21	B₂	2257	2164	81.30
22	B₂	2245	2153	135.46
23	B₂	958	918	31.28
24	B₂	884	848	336.06
25	B₂	726	696	302.72
26	B₂	470	450	4.53
27	B₂	436	418	19.49

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.883
Si2	0.000	1.956	-0.416
Si3	0.000	-1.956	-0.416
H4	1.198	0.000	1.765
H5	-1.198	0.000	1.765
H6	0.000	3.163	0.448
H7	0.000	-3.163	0.448
H8	1.203	2.000	-1.285
H9	-1.203	2.000	-1.285
H10	-1.203	-2.000	-1.285
H11	1.203	-2.000	-1.285

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3478	2.3478	1.4879	1.4879	3.1926	3.1926	3.1855	3.1855	3.1855	3.1855
Si2	2.3478		3.9112	3.1651	3.1651	1.4849	5.1910	1.4849	1.4849	4.2247	4.2247
Si3	2.3478	3.9112		3.1651	3.1651	5.1910	1.4849	4.2247	4.2247	1.4849	1.4849
H4	1.4879	3.1651	3.1651		2.3964	3.6296	3.6296	3.6472	4.3669	4.3669	3.6472
H5	1.4879	3.1651	3.1651	2.3964		3.6296	3.6296	4.3669	3.6472	3.6472	4.3669
H6	3.1926	1.4849	5.1910	3.6296	3.6296		6.3258	2.4095	2.4095	5.5772	5.5772
H7	3.1926	5.1910	1.4849	3.6296	3.6296	6.3258		5.5772	5.5772	2.4095	2.4095
H8	3.1855	1.4849	4.2247	3.6472	4.3669	2.4095	5.5772		2.4069	4.6678	3.9994
H9	3.1855	1.4849	4.2247	4.3669	3.6472	2.4095	5.5772	2.4069		3.9994	4.6678
H10	3.1855	4.2247	1.4849	4.3669	3.6472	5.5772	2.4095	4.6678	3.9994		2.4069
H11	3.1855	4.2247	1.4849	3.6472	4.3669	5.5772	2.4095	3.9994	4.6678	2.4069

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.798	S1	S2	H8	110.395
S1	S2	H9	110.395	S1	S3	H7	110.798
S1	S3	H10	110.395	S1	S3	H11	110.395
S2	S1	S3	112.806	S2	S1	H4	109.151
S2	S1	H5	109.151	S3	S1	H4	109.151
S3	S1	H5	109.151	H4	S1	H5	107.280
H6	S2	H8	108.450	H6	S2	H9	108.450
H7	S3	H10	108.450	H7	S3	H11	108.450
H8	S2	H9	108.277	H10	S3	H11	108.277

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/6-31G**

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	0.092
2	Si	0.291
3	Si	0.291
4	H	-0.077
5	H	-0.077
6	H	-0.086
7	H	-0.086
8	H	-0.087
9	H	-0.087
10	H	-0.087
11	H	-0.087

<r²>	209.476
(<r²>)^1/2	14.473

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/6-31G**

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)