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	hartrees
Energy at 0K	-871.851227
Energy at 298.15K	-871.858888
HF Energy	-871.415204
Nuclear repulsion energy	192.162265

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	2267	2267
2	A₁	2257	2257
3	A₁	2236	2236
4	A₁	972	972
5	A₁	947	947
6	A₁	910	910
7	A₁	576	576
8	A₁	393	393
9	A₁	96	96
10	A₂	2264	2264
11	A₂	964	964
12	A₂	716	716
13	A₂	425	425
14	A₂	79	79
15	B₁	2268	2268
16	B₁	2245	2245
17	B₁	968	968
18	B₁	607	607
19	B₁	317	317
20	B₁	95	95
21	B₂	2265	2265
22	B₂	2253	2253
23	B₂	965	965
24	B₂	897	897
25	B₂	733	733
26	B₂	469	469
27	B₂	441	441

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.913
Si2	0.000	1.937	-0.428
Si3	0.000	-1.937	-0.428
H4	1.202	0.000	1.786
H5	-1.202	0.000	1.786
H6	0.000	3.164	0.404
H7	0.000	-3.164	0.404
H8	1.203	1.950	-1.294
H9	-1.203	1.950	-1.294
H10	-1.203	-1.950	-1.294
H11	1.203	-1.950	-1.294

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3565	2.3565	1.4854	1.4854	3.2048	3.2048	3.1814	3.1814	3.1814	3.1814
Si2	2.3565		3.8748	3.1783	3.1783	1.4822	5.1688	1.4824	1.4824	4.1602	4.1602
Si3	2.3565	3.8748		3.1783	3.1783	5.1688	1.4822	4.1602	4.1602	1.4824	1.4824
H4	1.4854	3.1783	3.1783		2.4034	3.6560	3.6560	3.6455	4.3673	4.3673	3.6455
H5	1.4854	3.1783	3.1783	2.4034		3.6560	3.6560	4.3673	3.6455	3.6455	4.3673
H6	3.2048	1.4822	5.1688	3.6560	3.6560		6.3280	2.4094	2.4094	5.5209	5.5209
H7	3.2048	5.1688	1.4822	3.6560	3.6560	6.3280		5.5209	5.5209	2.4094	2.4094
H8	3.1814	1.4824	4.1602	3.6455	4.3673	2.4094	5.5209		2.4064	4.5821	3.8994
H9	3.1814	1.4824	4.1602	4.3673	3.6455	2.4094	5.5209	2.4064		3.8994	4.5821
H10	3.1814	4.1602	1.4824	4.3673	3.6455	5.5209	2.4094	4.5821	3.8994		2.4064
H11	3.1814	4.1602	1.4824	3.6455	4.3673	5.5209	2.4094	3.8994	4.5821	2.4064

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.153	S1	S2	H8	109.834
S1	S2	H9	109.834	S1	S3	H7	111.153
S1	S3	H10	109.834	S1	S3	H11	109.834
S2	S1	S3	110.605	S2	S1	H4	109.548
S2	S1	H5	109.548	S3	S1	H4	109.548
S3	S1	H5	109.548	H4	S1	H5	107.999
H6	S2	H8	108.725	H6	S2	H9	108.725
H7	S3	H10	108.725	H7	S3	H11	108.725
H8	S2	H9	108.515	H10	S3	H11	108.515

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: CCSD(T)/6-31G(2df,p)

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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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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All results from a given calculation for Si3H8 (trisilane)

using model chemistry: CCSD(T)/6-31G(2df,p)

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)