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	hartrees
Energy at 0K	-873.343416
Energy at 298.15K	-873.350987
HF Energy	-873.343416
Nuclear repulsion energy	192.460411

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2225	2132	135.72
2	A₁	2214	2121	8.72
3	A₁	2195	2103	58.56
4	A₁	947	907	65.42
5	A₁	922	883	0.20
6	A₁	882	845	170.14
7	A₁	562	538	5.16
8	A₁	386	370	0.54
9	A₁	96	92	1.21
10	A₂	2223	2130	0.00
11	A₂	939	899	0.00
12	A₂	705	675	0.00
13	A₂	415	398	0.00
14	A₂	76	73	0.00
15	B₁	2228	2135	219.26
16	B₁	2204	2112	19.41
17	B₁	943	904	65.97
18	B₁	590	565	9.04
19	B₁	312	299	16.42
20	B₁	94	90	0.05
21	B₂	2223	2130	61.41
22	B₂	2210	2117	99.08
23	B₂	940	901	32.56
24	B₂	869	832	294.84
25	B₂	710	680	273.14
26	B₂	463	444	5.49
27	B₂	431	413	17.03

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.897
Si2	0.000	1.938	-0.422
Si3	0.000	-1.938	-0.422
H4	1.204	0.000	1.776
H5	-1.204	0.000	1.776
H6	0.000	3.160	0.427
H7	0.000	-3.160	0.427
H8	1.207	1.965	-1.291
H9	-1.207	1.965	-1.291
H10	-1.207	-1.965	-1.291
H11	1.207	-1.965	-1.291

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3446	2.3446	1.4907	1.4907	3.1950	3.1950	3.1793	3.1793	3.1793	3.1793
Si2	2.3446		3.8769	3.1683	3.1683	1.4878	5.1689	1.4878	1.4878	4.1775	4.1775
Si3	2.3446	3.8769		3.1683	3.1683	5.1689	1.4878	4.1775	4.1775	1.4878	1.4878
H4	1.4907	3.1683	3.1683		2.4082	3.6410	3.6410	3.6428	4.3684	4.3684	3.6428
H5	1.4907	3.1683	3.1683	2.4082		3.6410	3.6410	4.3684	3.6428	3.6428	4.3684
H6	3.1950	1.4878	5.1689	3.6410	3.6410		6.3206	2.4162	2.4162	5.5389	5.5389
H7	3.1950	5.1689	1.4878	3.6410	3.6410	6.3206		5.5389	5.5389	2.4162	2.4162
H8	3.1793	1.4878	4.1775	3.6428	4.3684	2.4162	5.5389		2.4141	4.6125	3.9303
H9	3.1793	1.4878	4.1775	4.3684	3.6428	2.4162	5.5389	2.4141		3.9303	4.6125
H10	3.1793	4.1775	1.4878	4.3684	3.6428	5.5389	2.4162	4.6125	3.9303		2.4141
H11	3.1793	4.1775	1.4878	3.6428	4.3684	5.5389	2.4162	3.9303	4.6125	2.4141

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.975	S1	S2	H8	110.093
S1	S2	H9	110.093	S1	S3	H7	110.975
S1	S3	H10	110.093	S1	S3	H11	110.093
S2	S1	S3	111.537	S2	S1	H4	109.369
S2	S1	H5	109.369	S3	S1	H4	109.369
S3	S1	H5	109.369	H4	S1	H5	107.749
H6	S2	H8	108.585	H6	S2	H9	108.585
H7	S3	H10	108.585	H7	S3	H11	108.585
H8	S2	H9	108.446	H10	S3	H11	108.446

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: mPW1PW91/aug-cc-pVTZ

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	0.231
2	Si	0.352
3	Si	0.352
4	H	-0.098
5	H	-0.098
6	H	-0.153
7	H	-0.153
8	H	-0.108
9	H	-0.108
10	H	-0.108
11	H	-0.108

<r²>	207.829
(<r²>)^1/2	14.416

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: mPW1PW91/aug-cc-pVTZ

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)