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	hartrees
Energy at 0K	-872.935736
Energy at 298.15K	-872.943465
HF Energy	-872.806161
Nuclear repulsion energy	192.594401

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2246	2246	140.03
2	A₁	2239	2239	16.54
3	A₁	2216	2216	65.38
4	A₁	972	972	74.70
5	A₁	947	947	2.35
6	A₁	909	909	193.77
7	A₁	575	575	6.33
8	A₁	387	387	0.55
9	A₁	97	97	1.38
10	A₂	2242	2242	0.00
11	A₂	964	964	0.00
12	A₂	719	719	0.00
13	A₂	425	425	0.00
14	A₂	91	91	0.00
15	B₁	2247	2247	233.75
16	B₁	2223	2223	26.07
17	B₁	968	968	78.24
18	B₁	604	604	9.57
19	B₁	320	320	20.10
20	B₁	107	107	0.05
21	B₂	2244	2244	77.90
22	B₂	2234	2234	94.82
23	B₂	964	964	37.63
24	B₂	897	897	332.19
25	B₂	732	732	296.23
26	B₂	466	466	8.65
27	B₂	440	440	15.81

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.898
Si2	0.000	1.941	-0.422
Si3	0.000	-1.941	-0.422
H4	1.198	0.000	1.771
H5	-1.198	0.000	1.771
H6	0.000	3.156	0.422
H7	0.000	-3.156	0.422
H8	1.201	1.965	-1.286
H9	-1.201	1.965	-1.286
H10	-1.201	-1.965	-1.286
H11	1.201	-1.965	-1.286

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3473	2.3473	1.4825	1.4825	3.1916	3.1916	3.1741	3.1741	3.1741	3.1741
Si2	2.3473		3.8821	3.1644	3.1644	1.4792	5.1663	1.4795	1.4795	4.1771	4.1771
Si3	2.3473	3.8821		3.1644	3.1644	5.1663	1.4792	4.1771	4.1771	1.4795	1.4795
H4	1.4825	3.1644	3.1644		2.3958	3.6353	3.6353	3.6348	4.3548	4.3548	3.6348
H5	1.4825	3.1644	3.1644	2.3958		3.6353	3.6353	4.3548	3.6348	3.6348	4.3548
H6	3.1916	1.4792	5.1663	3.6353	3.6353		6.3117	2.4034	2.4034	5.5305	5.5305
H7	3.1916	5.1663	1.4792	3.6353	3.6353	6.3117		5.5305	5.5305	2.4034	2.4034
H8	3.1741	1.4795	4.1771	3.6348	4.3548	2.4034	5.5305		2.4013	4.6062	3.9308
H9	3.1741	1.4795	4.1771	4.3548	3.6348	2.4034	5.5305	2.4013		3.9308	4.6062
H10	3.1741	4.1771	1.4795	4.3548	3.6348	5.5305	2.4034	4.6062	3.9308		2.4013
H11	3.1741	4.1771	1.4795	3.6348	4.3548	5.5305	2.4034	3.9308	4.6062	2.4013

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.995	S1	S2	H8	110.003
S1	S2	H9	110.003	S1	S3	H7	110.995
S1	S3	H10	110.003	S1	S3	H11	110.003
S2	S1	S3	111.567	S2	S1	H4	109.348
S2	S1	H5	109.348	S3	S1	H4	109.348
S3	S1	H5	109.348	H4	S1	H5	107.804
H6	S2	H8	108.648	H6	S2	H9	108.648
H7	S3	H10	108.648	H7	S3	H11	108.648
H8	S2	H9	108.487	H10	S3	H11	108.487

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B2PLYP/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	0.078
2	Si	0.143
3	Si	0.143
4	H	-0.047
5	H	-0.047
6	H	-0.045
7	H	-0.045
8	H	-0.045
9	H	-0.045
10	H	-0.045
11	H	-0.045

<r²>	208.344
(<r²>)^1/2	14.434

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B2PLYP/cc-pV(T+d)Z

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)