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Geometry for N(SiH3)3 (trisilylamine) 1A' C3H

1910171554
InChI=1S/H9NSi3/c2-1(3)4/h2-4H3 INChIKey=

MP2/6-311G*


Point group is C3h
Atom Internal Principal
x (Å) y (Å) z (Å)   a (Å) b (Å) c (Å)
N1 0.0000 0.0000 0.0000   0.0000 0.0000 0.0000
Si2 0.0000 1.7497 0.0000   0.0214 -1.7496 0.0000
Si3 -1.5153 -0.8749 0.0000   1.5045 0.8933 0.0000
Si4 1.5153 -0.8749 0.0000   -1.5259 0.8563 0.0000
H5 -1.4152 2.1923 0.0000   1.4419 -2.1748 0.0000
H6 -1.1910 -2.3218 0.0000   1.1625 2.3361 0.0000
H7 2.6062 0.1295 0.0000   -2.6044 -0.1613 0.0000
H8 0.6794 2.2954 1.1990   -0.6513 -2.3035 1.1990
H9 0.6794 2.2954 -1.1990   -0.6513 -2.3035 -1.1990
H10 -2.3276 -0.5593 1.1990   2.3206 0.5877 1.1990
H11 -2.3276 -0.5593 -1.1990   2.3206 0.5877 -1.1990
H12 1.6482 -1.7361 1.1990   -1.6693 1.7158 1.1990
H13 1.6482 -1.7361 -1.1990   -1.6693 1.7158 -1.1990
Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N1 1.7497 1.7497 1.7497 2.6094 2.6094 2.6094 2.6773 2.6773 2.6773 2.6773 2.6773 2.6773
Si2 1.7497 3.0306 3.0306 1.4828 4.2421 3.0688 1.4822 1.4822 3.4910 3.4910 4.0379 4.0379
Si3 1.7497 3.0306 3.0306 3.0688 1.4828 4.2421 4.0379 4.0379 1.4822 1.4822 3.4910 3.4910
Si4 1.7497 3.0306 3.0306 4.2421 3.0688 1.4828 3.4910 3.4910 4.0379 4.0379 1.4822 1.4822
H5 2.6094 1.4828 3.0688 4.2421 4.5196 4.5196 2.4157 2.4157 3.1371 3.1371 5.1239 5.1239
H6 2.6094 4.2421 1.4828 3.0688 4.5196 4.5196 5.1239 5.1239 2.4157 2.4157 3.1371 3.1371
H7 2.6094 3.0688 4.2421 1.4828 4.5196 4.5196 3.1371 3.1371 5.1239 5.1239 2.4157 2.4157
H8 2.6773 1.4822 4.0379 3.4910 2.4157 5.1239 3.1371 2.3980 4.1462 4.7898 4.1462 4.7898
H9 2.6773 1.4822 4.0379 3.4910 2.4157 5.1239 3.1371 2.3980 4.7898 4.1462 4.7898 4.1462
H10 2.6773 3.4910 1.4822 4.0379 3.1371 2.4157 5.1239 4.1462 4.7898 2.3980 4.1462 4.7898
H11 2.6773 3.4910 1.4822 4.0379 3.1371 2.4157 5.1239 4.7898 4.1462 2.3980 4.7898 4.1462
H12 2.6773 4.0379 3.4910 1.4822 5.1239 3.1371 2.4157 4.1462 4.7898 4.1462 4.7898 2.3980
H13 2.6773 4.0379 3.4910 1.4822 5.1239 3.1371 2.4157 4.7898 4.1462 4.7898 4.1462 2.3980
Maximum atom distance is 5.1239Å between atoms H6 and H8.
picture of trisilylamine
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
Si2 N1 Si3 120.000 Si2 N1 Si4 120.000
Si3 N1 Si4 120.000
Calculated Bond Angles (degrees) (Involving Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
N1 Si2 H5 107.365 N1 Si2 H8 111.601
N1 Si2 H9 111.601 N1 Si3 H6 107.365
N1 Si3 H10 111.601 N1 Si3 H11 111.601
N1 Si4 H7 107.365 N1 Si4 H12 111.601
N1 Si4 H13 111.601 H5 Si2 H8 109.123
H5 Si2 H9 109.123 H6 Si3 H10 109.123
H6 Si3 H11 109.123 H7 Si4 H12 109.123
H7 Si4 H13 109.123 H8 Si2 H9 107.984
H10 Si3 H11 107.984 H12 Si4 H13 107.984

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