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Geometry for Si3H8 (trisilane) 1A1 C2V

1910171554
InChI=1S/H8Si3/c1-3-2/h3H2,1-2H3 INChIKey=VEDJZFSRVVQBIL-UHFFFAOYSA-N

wB97X-D/aug-cc-pVTZ


Point group is C2v
Atom Internal Principal
x (Å) y (Å) z (Å)   a (Å) b (Å) c (Å)
Si1 0.0000 0.0000 0.9057   0.9057 0.0000 0.0000
Si2 0.0000 1.9285 -0.4247   -0.4247 0.0000 1.9285
Si3 0.0000 -1.9285 -0.4247   -0.4247 0.0000 -1.9285
H4 1.2027 0.0000 1.7816   1.7816 1.2027 0.0000
H5 -1.2027 0.0000 1.7816   1.7816 -1.2027 0.0000
H6 0.0000 3.1559 0.4105   0.4105 0.0000 3.1559
H7 0.0000 -3.1559 0.4105   0.4105 0.0000 -3.1559
H8 1.2047 1.9440 -1.2931   -1.2931 1.2047 1.9440
H9 -1.2047 1.9440 -1.2931   -1.2931 -1.2047 1.9440
H10 -1.2047 -1.9440 -1.2931   -1.2931 -1.2047 -1.9440
H11 1.2047 -1.9440 -1.2931   -1.2931 1.2047 -1.9440
Atom - Atom Distances (Å)
  Si1 Si2 Si3 H4 H5 H6 H7 H8 H9 H10 H11
Si1 2.3429 2.3429 1.4878 1.4878 3.1946 3.1946 3.1727 3.1727 3.1727 3.1727
Si2 2.3429 3.8570 3.1675 3.1675 1.4847 5.1526 1.4852 1.4852 4.1475 4.1475
Si3 2.3429 3.8570 3.1675 3.1675 5.1526 1.4847 4.1475 4.1475 1.4852 1.4852
H4 1.4878 3.1675 3.1675 2.4054 3.6450 3.6450 3.6378 4.3622 4.3622 3.6378
H5 1.4878 3.1675 3.1675 2.4054 3.6450 3.6450 4.3622 3.6378 3.6378 4.3622
H6 3.1946 1.4847 5.1526 3.6450 3.6450 6.3119 2.4130 2.4130 5.5103 5.5103
H7 3.1946 5.1526 1.4847 3.6450 3.6450 6.3119 5.5103 5.5103 2.4130 2.4130
H8 3.1727 1.4852 4.1475 3.6378 4.3622 2.4130 5.5103 2.4095 4.5741 3.8881
H9 3.1727 1.4852 4.1475 4.3622 3.6378 2.4130 5.5103 2.4095 3.8881 4.5741
H10 3.1727 4.1475 1.4852 4.3622 3.6378 5.5103 2.4130 4.5741 3.8881 2.4095
H11 3.1727 4.1475 1.4852 3.6378 4.3622 5.5103 2.4130 3.8881 4.5741 2.4095
Maximum atom distance is 6.3119Å between atoms H6 and H7.
picture of trisilane
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
S2 S1 S3 110.797
Calculated Bond Angles (degrees) (Involving Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
S1 S2 H6 111.165 S1 S2 H8 109.918
S1 S2 H9 109.918 S1 S3 H7 111.165
S1 S3 H10 109.918 S1 S3 H11 109.918
S2 S1 H4 109.530 S2 S1 H5 109.530
S3 S1 H4 109.530 S3 S1 H5 109.530
H4 S1 H5 107.872 H6 S2 H8 108.680
H6 S2 H9 108.680 H7 S3 H10 108.680
H7 S3 H11 108.680 H8 S2 H9 108.419
H10 S3 H11 108.419

For information on specific bond angles or dihedrals see the geometry comparison page in section Comparisons > Geometry > Bonds, angles.