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	hartrees
Energy at 0K	-871.932890
Energy at 298.15K	-871.940541
HF Energy	-871.475257
Nuclear repulsion energy	192.696351

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A₁	2229	2200
2	A₁	2220	2191
3	A₁	2200	2171
4	A₁	959	947
5	A₁	934	922
6	A₁	897	886
7	A₁	570	563
8	A₁	393	388
9	A₁	94	93
10	A₂	2224	2195
11	A₂	952	939
12	A₂	709	699
13	A₂	418	412
14	A₂	86	85
15	B₁	2229	2200
16	B₁	2208	2179
17	B₁	956	943
18	B₁	600	592
19	B₁	315	311
20	B₁	100	99
21	B₂	2227	2198
22	B₂	2215	2186
23	B₂	952	940
24	B₂	886	875
25	B₂	722	712
26	B₂	470	464
27	B₂	435	430

Atom	x (Å)	y (Å)	z (Å)
Si1	0.000	0.000	0.909
Si2	0.000	1.929	-0.426
Si3	0.000	-1.929	-0.426
H4	1.203	0.000	1.784
H5	-1.203	0.000	1.784
H6	0.000	3.160	0.405
H7	0.000	-3.160	0.405
H8	1.205	1.942	-1.294
H9	-1.205	1.942	-1.294
H10	-1.205	-1.942	-1.294
H11	1.205	-1.942	-1.294

	Si1	Si2	Si3	H4	H5	H6	H7	H8	H9	H10	H11
Si1		2.3457	2.3457	1.4879	1.4879	3.1996	3.1996	3.1741	3.1741	3.1741	3.1741
Si2	2.3457		3.8580	3.1706	3.1706	1.4846	5.1559	1.4853	1.4853	4.1457	4.1457
Si3	2.3457	3.8580		3.1706	3.1706	5.1559	1.4846	4.1457	4.1457	1.4853	1.4853
H4	1.4879	3.1706	3.1706		2.4063	3.6515	3.6515	3.6396	4.3641	4.3641	3.6396
H5	1.4879	3.1706	3.1706	2.4063		3.6515	3.6515	4.3641	3.6396	3.6396	4.3641
H6	3.1996	1.4846	5.1559	3.6515	3.6515		6.3192	2.4129	2.4129	5.5100	5.5100
H7	3.1996	5.1559	1.4846	3.6515	3.6515	6.3192		5.5100	5.5100	2.4129	2.4129
H8	3.1741	1.4853	4.1457	3.6396	4.3641	2.4129	5.5100		2.4097	4.5700	3.8830
H9	3.1741	1.4853	4.1457	4.3641	3.6396	2.4129	5.5100	2.4097		3.8830	4.5700
H10	3.1741	4.1457	1.4853	4.3641	3.6396	5.5100	2.4129	4.5700	3.8830		2.4097
H11	3.1741	4.1457	1.4853	3.6396	4.3641	5.5100	2.4129	3.8830	4.5700	2.4097

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
S1	S2	H6	111.305	S1	S2	H8	109.854
S1	S2	H9	109.854	S1	S3	H7	111.305
S1	S3	H10	109.854	S1	S3	H11	109.854
S2	S1	S3	110.642	S2	S1	H4	109.557
S2	S1	H5	109.557	S3	S1	H4	109.557
S3	S1	H5	109.557	H4	S1	H5	107.923
H6	S2	H8	108.670	H6	S2	H9	108.670
H7	S3	H10	108.670	H7	S3	H11	108.670
H8	S2	H9	108.426	H10	S3	H11	108.426

All results from a given calculation for Si₃H₈ (trisilane)

using model chemistry: CCSD(T)/6-311+G(3df,2p)

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)/6-311+G(3df,2p)

States and conformations

All results from a given calculation for Si₃H₈ (trisilane)