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All results from a given calculation for N(SiH3)3 (trisilylamine)

using model chemistry: B2PLYP=FULLultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B2PLYP=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-928.201473
Energy at 298.15K 
HF Energy-928.032006
Nuclear repulsion energy290.263783
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B2PLYP=FULLultrafine/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2291 2291 0.00 722.65 0.00 0.00
2 A' 2278 2278 0.00 91.52 0.74 0.85
3 A' 1050 1050 0.00 7.38 0.73 0.84
4 A' 991 991 0.00 8.61 0.74 0.85
5 A' 672 672 0.00 0.31 0.26 0.41
6 A' 482 482 0.00 17.36 0.06 0.11
7 A" 2279 2279 479.54 0.00 0.75 0.86
8 A" 975 975 205.31 0.00 0.75 0.86
9 A" 754 754 118.80 0.00 0.75 0.86
10 A" 182 182 1.41 0.00 0.75 0.86
11 A" 86 86 0.03 0.00 0.75 0.86
12 E' 2289 2289 289.38 68.67 0.75 0.86
12 E' 2289 2289 289.45 68.66 0.75 0.86
13 E' 2275 2275 79.21 3.76 0.75 0.86
13 E' 2275 2275 79.18 3.77 0.75 0.86
14 E' 1020 1020 41.18 4.91 0.75 0.86
14 E' 1020 1020 41.21 4.91 0.75 0.86
15 E' 999 999 190.10 8.24 0.75 0.86
15 E' 999 999 190.14 8.24 0.75 0.86
16 E' 968 968 727.67 15.87 0.75 0.86
16 E' 968 968 727.67 15.87 0.75 0.86
17 E' 704 704 3.82 11.73 0.75 0.86
17 E' 704 704 3.83 11.74 0.75 0.86
18 E' 181 181 0.41 0.21 0.75 0.86
18 E' 181 181 0.41 0.21 0.75 0.86
19 E" 2276 2276 0.00 126.05 0.75 0.86
19 E" 2276 2276 0.00 126.06 0.75 0.86
20 E" 972 972 0.00 19.78 0.75 0.86
20 E" 972 972 0.00 19.78 0.75 0.86
21 E" 702 702 0.00 11.40 0.75 0.86
21 E" 702 702 0.00 11.40 0.75 0.86
22 E" 79 79 0.00 0.88 0.75 0.86
22 E" 78 78 0.00 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18484.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18484.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/6-31+G**
ABC
0.10188 0.10188 0.05376

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.754 0.000
Si3 -1.519 -0.877 0.000
Si4 1.519 -0.877 0.000
H5 -1.412 2.197 0.000
H6 -1.196 -2.322 0.000
H7 2.609 0.125 0.000
H8 0.680 2.295 1.198
H9 0.680 2.295 -1.198
H10 -2.328 -0.558 1.198
H11 -2.328 -0.558 -1.198
H12 1.647 -1.737 1.198
H13 1.647 -1.737 -1.198

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75431.75431.75432.61162.61162.61162.67692.67692.67692.67692.67692.6769
Si21.75433.03853.03851.48014.24773.07571.48021.48023.49323.49324.04204.0420
Si31.75433.03853.03853.07571.48014.24774.04204.04201.48021.48023.49323.4932
Si41.75433.03853.03854.24773.07571.48013.49323.49324.04204.04201.48021.4802
H52.61161.48013.07574.24774.52344.52342.41362.41363.14053.14055.12555.1255
H62.61164.24771.48013.07574.52344.52345.12555.12552.41362.41363.14053.1405
H72.61163.07574.24771.48014.52344.52343.14053.14055.12555.12552.41362.4136
H82.67691.48024.04203.49322.41365.12553.14052.39614.14634.78894.14634.7889
H92.67691.48024.04203.49322.41365.12553.14052.39614.78894.14634.78894.1463
H102.67693.49321.48024.04203.14052.41365.12554.14634.78892.39614.14634.7889
H112.67693.49321.48024.04203.14052.41365.12554.78894.14632.39614.78894.1463
H122.67694.04203.49321.48025.12553.14052.41364.14634.78894.14634.78892.3961
H132.67694.04203.49321.48025.12553.14052.41364.78894.14634.78894.14632.3961

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.392 N1 Si2 H8 111.432
N1 Si2 H9 111.432 N1 Si3 H6 107.392
N1 Si3 H10 111.433 N1 Si3 H11 111.433
N1 Si4 H7 107.392 N1 Si4 H12 111.433
N1 Si4 H13 111.433 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.238 H5 Si2 H9 109.238
H6 Si3 H10 109.238 H6 Si3 H11 109.238
H7 Si4 H12 109.238 H7 Si4 H13 109.238
H8 Si2 H9 108.075 H10 Si3 H11 108.074
H12 Si4 H13 108.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.214      
2 Si 0.774      
3 Si 0.774      
4 Si 0.774      
5 H -0.126      
6 H -0.126      
7 H -0.126      
8 H -0.122      
9 H -0.122      
10 H -0.122      
11 H -0.122      
12 H -0.122      
13 H -0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.744 0.000 0.000
y 0.000 -51.744 0.000
z 0.000 0.000 -53.384
Traceless
 xyz
x 0.820 0.000 0.000
y 0.000 0.820 0.000
z 0.000 0.000 -1.640
Polar
3z2-r2-3.280
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.106 0.000 0.000
y 0.000 12.106 0.000
z 0.000 0.000 10.448


<r2> (average value of r2) Å2
<r2> 225.372
(<r2>)1/2 15.012