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	hartrees
Energy at 0K	-873.200064
Energy at 298.15K	-873.207531
HF Energy	-873.200064
Nuclear repulsion energy	189.841803

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	2173	2091	223.21
2	A₁	2152	2071	5.33
3	A₁	2136	2055	99.93
4	A₁	932	897	74.82
5	A₁	909	874	5.16
6	A₁	858	826	157.14
7	A₁	558	537	8.01
8	A₁	370	356	0.55
9	A₁	104	100	1.32
10	A₂	2170	2088	0.00
11	A₂	923	888	0.00
12	A₂	710	683	0.00
13	A₂	433	417	0.00
14	A₂	57	55	0.00
15	B₁	2178	2095	371.18
16	B₁	2153	2071	22.40
17	B₁	928	892	69.13
18	B₁	585	563	9.67
19	B₁	324	312	19.35
20	B₁	78	75	0.03
21	B₂	2171	2088	82.17
22	B₂	2145	2064	154.83
23	B₂	928	892	31.66
24	B₂	843	811	284.28
25	B₂	712	685	305.19
26	B₂	461	443	11.83
27	B₂	440	423	8.98

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.891
Si2	0.000	1.980	-0.420
Si3	0.000	-1.980	-0.420
H4	1.211	0.000	1.787
H5	-1.211	0.000	1.787
H6	0.000	3.201	0.456
H7	0.000	-3.201	0.456
H8	1.217	2.028	-1.301
H9	-1.217	2.028	-1.301
H10	-1.217	-2.028	-1.301
H11	1.217	-2.028	-1.301

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3742	2.3742	1.5061	1.5061	3.2306	3.2306	3.2248	3.2248	3.2248	3.2248
Si2	2.3742		3.9592	3.2020	3.2020	1.5033	5.2544	1.5034	1.5034	4.2804	4.2804
Si3	2.3742	3.9592		3.2020	3.2020	5.2544	1.5033	4.2804	4.2804	1.5034	1.5034
H4	1.5061	3.2020	3.2020		2.4214	3.6720	3.6720	3.6941	4.4206	4.4206	3.6941
H5	1.5061	3.2020	3.2020	2.4214		3.6720	3.6720	4.4206	3.6941	3.6941	4.4206
H6	3.2306	1.5033	5.2544	3.6720	3.6720		6.4025	2.4380	2.4380	5.6496	5.6496
H7	3.2306	5.2544	1.5033	3.6720	3.6720	6.4025		5.6496	5.6496	2.4380	2.4380
H8	3.2248	1.5034	4.2804	3.6941	4.4206	2.4380	5.6496		2.4345	4.7313	4.0569
H9	3.2248	1.5034	4.2804	4.4206	3.6941	2.4380	5.6496	2.4345		4.0569	4.7313
H10	3.2248	4.2804	1.5034	4.4206	3.6941	5.6496	2.4380	4.7313	4.0569		2.4345
H11	3.2248	4.2804	1.5034	3.6941	4.4206	5.6496	2.4380	4.0569	4.7313	2.4345

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	110.849	S1	S2	H8	110.523
S1	S2	H9	110.523	S1	S3	H7	110.849
S1	S3	H10	110.523	S1	S3	H11	110.523
S2	S1	S3	112.984	S2	S1	H4	109.169
S2	S1	H5	109.169	S3	S1	H4	109.169
S3	S1	H5	109.169	H4	S1	H5	107.005
H6	S2	H8	108.364	H6	S2	H9	108.364
H7	S3	H10	108.364	H7	S3	H11	108.364
H8	S2	H9	108.128	H10	S3	H11	108.128

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: B3LYP/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	0.129
2	Si	0.303
3	Si	0.303
4	H	-0.088
5	H	-0.088
6	H	-0.093
7	H	-0.093
8	H	-0.093
9	H	-0.093
10	H	-0.093
11	H	-0.093

<r²>	214.668
(<r²>)^1/2	14.652

All results from a given calculation for Si3H8 (trisilane)

using model chemistry: B3LYP/6-31G

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)