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	hartrees
Energy at 0K	-873.385456
Energy at 298.15K	-873.392941
HF Energy	-873.385456
Nuclear repulsion energy	192.372248

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2231	2231	145.51
2	A₁	2225	2225	5.16
3	A₁	2202	2202	59.06
4	A₁	960	960	72.95
5	A₁	935	935	0.87
6	A₁	896	896	175.01
7	A₁	564	564	5.22
8	A₁	382	382	0.50
9	A₁	94	94	1.21
10	A₂	2230	2230	0.00
11	A₂	949	949	0.00
12	A₂	708	708	0.00
13	A₂	411	411	0.00
14	A₂	49	49	0.00
15	B₁	2234	2234	218.22
16	B₁	2209	2209	25.29
17	B₁	953	953	70.73
18	B₁	594	594	8.81
19	B₁	307	307	16.89
20	B₁	72	72	0.08
21	B₂	2230	2230	56.27
22	B₂	2221	2221	107.75
23	B₂	953	953	31.06
24	B₂	882	882	327.10
25	B₂	717	717	277.38
26	B₂	460	460	5.67
27	B₂	428	428	17.41

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.891
Si2	0.000	1.947	-0.419
Si3	0.000	-1.947	-0.419
H4	1.199	0.000	1.769
H5	-1.199	0.000	1.769
H6	0.000	3.160	0.434
H7	0.000	-3.160	0.434
H8	1.203	1.982	-1.286
H9	-1.203	1.982	-1.286
H10	-1.203	-1.982	-1.286
H11	1.203	-1.982	-1.286

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3467	2.3467	1.4858	1.4858	3.1929	3.1929	3.1798	3.1798	3.1798	3.1798
Si2	2.3467		3.8942	3.1646	3.1646	1.4828	5.1779	1.4827	1.4827	4.1992	4.1992
Si3	2.3467	3.8942		3.1646	3.1646	5.1779	1.4828	4.1992	4.1992	1.4827	1.4827
H4	1.4858	3.1646	3.1646		2.3971	3.6338	3.6338	3.6412	4.3616	4.3616	3.6412
H5	1.4858	3.1646	3.1646	2.3971		3.6338	3.6338	4.3616	3.6412	3.6412	4.3616
H6	3.1929	1.4828	5.1779	3.6338	3.6338		6.3200	2.4066	2.4066	5.5535	5.5535
H7	3.1929	5.1779	1.4828	3.6338	3.6338	6.3200		5.5535	5.5535	2.4066	2.4066
H8	3.1798	1.4827	4.1992	3.6412	4.3616	2.4066	5.5535		2.4051	4.6362	3.9635
H9	3.1798	1.4827	4.1992	4.3616	3.6412	2.4066	5.5535	2.4051		3.9635	4.6362
H10	3.1798	4.1992	1.4827	4.3616	3.6412	5.5535	2.4066	4.6362	3.9635		2.4051
H11	3.1798	4.1992	1.4827	3.6412	4.3616	5.5535	2.4066	3.9635	4.6362	2.4051

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.951	S1	S2	H8	110.222
S1	S2	H9	110.222	S1	S3	H7	110.951
S1	S3	H10	110.222	S1	S3	H11	110.222
S2	S1	S3	112.140	S2	S1	H4	109.262
S2	S1	H5	109.262	S3	S1	H4	109.262
S3	S1	H5	109.262	H4	S1	H5	107.544
H6	S2	H8	108.490	H6	S2	H9	108.490
H7	S3	H10	108.490	H7	S3	H11	108.490
H8	S2	H9	108.395	H10	S3	H11	108.395

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/cc-pV(T+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	0.136
2	Si	0.222
3	Si	0.222
4	H	-0.076
5	H	-0.076
6	H	-0.071
7	H	-0.071
8	H	-0.072
9	H	-0.072
10	H	-0.072
11	H	-0.072

<r²>	208.663
(<r²>)^1/2	14.445

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/cc-pV(T+d)Z

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)