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	hartrees
Energy at 0K	-873.391856
Energy at 298.15K	-873.399320
HF Energy	-873.391856
Nuclear repulsion energy	192.336028

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2235	2235	150.76
2	A₁	2230	2230	3.16
3	A₁	2207	2207	58.68
4	A₁	959	959	72.70
5	A₁	935	935	0.76
6	A₁	896	896	172.71
7	A₁	565	565	5.24
8	A₁	381	381	0.52
9	A₁	94	94	1.21
10	A₂	2233	2233	0.00
11	A₂	949	949	0.00
12	A₂	709	709	0.00
13	A₂	412	412	0.00
14	A₂	44	44	0.00
15	B₁	2238	2238	222.54
16	B₁	2213	2213	25.74
17	B₁	953	953	70.31
18	B₁	595	595	9.01
19	B₁	309	309	16.60
20	B₁	69	69	0.10
21	B₂	2233	2233	56.57
22	B₂	2226	2226	109.30
23	B₂	953	953	30.47
24	B₂	881	881	325.54
25	B₂	718	718	276.26
26	B₂	459	459	6.11
27	B₂	429	429	17.10

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.891
Si2	0.000	1.948	-0.419
Si3	0.000	-1.948	-0.419
H4	1.198	0.000	1.769
H5	-1.198	0.000	1.769
H6	0.000	3.161	0.434
H7	0.000	-3.161	0.434
H8	1.203	1.983	-1.286
H9	-1.203	1.983	-1.286
H10	-1.203	-1.983	-1.286
H11	1.203	-1.983	-1.286

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3473	2.3473	1.4858	1.4858	3.1934	3.1934	3.1806	3.1806	3.1806	3.1806
Si2	2.3473		3.8952	3.1652	3.1652	1.4829	5.1789	1.4828	1.4828	4.2005	4.2005
Si3	2.3473	3.8952		3.1652	3.1652	5.1789	1.4829	4.2005	4.2005	1.4828	1.4828
H4	1.4858	3.1652	3.1652		2.3967	3.6343	3.6343	3.6422	4.3623	4.3623	3.6422
H5	1.4858	3.1652	3.1652	2.3967		3.6343	3.6343	4.3623	3.6422	3.6422	4.3623
H6	3.1934	1.4829	5.1789	3.6343	3.6343		6.3210	2.4065	2.4065	5.5549	5.5549
H7	3.1934	5.1789	1.4829	3.6343	3.6343	6.3210		5.5549	5.5549	2.4065	2.4065
H8	3.1806	1.4828	4.2005	3.6422	4.3623	2.4065	5.5549		2.4051	4.6377	3.9654
H9	3.1806	1.4828	4.2005	4.3623	3.6422	2.4065	5.5549	2.4051		3.9654	4.6377
H10	3.1806	4.2005	1.4828	4.3623	3.6422	5.5549	2.4065	4.6377	3.9654		2.4051
H11	3.1806	4.2005	1.4828	3.6422	4.3623	5.5549	2.4065	3.9654	4.6377	2.4051

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.951	S1	S2	H8	110.237
S1	S2	H9	110.237	S1	S3	H7	110.951
S1	S3	H10	110.237	S1	S3	H11	110.237
S2	S1	S3	112.141	S2	S1	H4	109.266
S2	S1	H5	109.266	S3	S1	H4	109.266
S3	S1	H5	109.266	H4	S1	H5	107.523
H6	S2	H8	108.477	H6	S2	H9	108.477
H7	S3	H10	108.477	H7	S3	H11	108.477
H8	S2	H9	108.391	H10	S3	H11	108.391

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: TPSSh/cc-pVQZ

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	0.189
2	Si	0.285
3	Si	0.285
4	H	-0.091
5	H	-0.091
6	H	-0.093
7	H	-0.093
8	H	-0.098
9	H	-0.098
10	H	-0.098
11	H	-0.098

<r²>	208.695
(<r²>)^1/2	14.446

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: TPSSh/cc-pVQZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)