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

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

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/6-31G**
 hartrees
Energy at 0K-928.191501
Energy at 298.15K 
HF Energy-928.025502
Nuclear repulsion energy290.575365
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/6-31G**
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' 2290 2290 0.00 554.37 0.00 0.00
2 A' 2277 2277 0.00 78.71 0.66 0.79
3 A' 1064 1064 0.00 14.96 0.75 0.86
4 A' 994 994 0.00 15.23 0.75 0.86
5 A' 673 673 0.00 1.21 0.04 0.07
6 A' 487 487 0.00 15.09 0.08 0.14
7 A" 2278 2278 500.40 0.00 0.75 0.86
8 A" 977 977 226.25 0.00 0.75 0.86
9 A" 756 756 122.35 0.00 0.75 0.86
10 A" 178 178 1.20 0.00 0.75 0.86
11 A" 86 86 0.01 0.00 0.75 0.86
12 E' 2289 2289 290.11 57.88 0.75 0.86
12 E' 2289 2289 290.18 57.87 0.75 0.86
13 E' 2273 2273 82.88 3.36 0.75 0.86
13 E' 2273 2273 82.85 3.36 0.75 0.86
14 E' 1026 1026 35.34 6.37 0.75 0.86
14 E' 1026 1026 35.32 6.37 0.75 0.86
15 E' 1003 1003 258.01 5.69 0.75 0.86
15 E' 1003 1003 258.03 5.69 0.75 0.86
16 E' 974 974 678.80 23.52 0.75 0.86
16 E' 974 974 678.82 23.52 0.75 0.86
17 E' 704 704 3.14 12.86 0.75 0.86
17 E' 704 704 3.14 12.86 0.75 0.86
18 E' 182 182 0.47 0.13 0.75 0.86
18 E' 182 182 0.47 0.13 0.75 0.86
19 E" 2274 2274 0.00 96.51 0.75 0.86
19 E" 2274 2274 0.00 96.51 0.75 0.86
20 E" 971 971 0.00 24.86 0.75 0.86
20 E" 971 971 0.00 24.86 0.75 0.86
21 E" 705 705 0.00 13.43 0.75 0.86
21 E" 705 705 0.00 13.44 0.75 0.86
22 E" 77 77 0.00 0.64 0.75 0.86
22 E" 77 77 0.00 0.64 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18507.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18507.8 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/6-31G**
ABC
0.10214 0.10214 0.05390

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

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.751 0.000
Si3 -1.517 -0.876 0.000
Si4 1.517 -0.876 0.000
H5 -1.413 2.195 0.000
H6 -1.194 -2.321 0.000
H7 2.607 0.126 0.000
H8 0.677 2.301 1.197
H9 0.677 2.301 -1.197
H10 -2.331 -0.564 1.197
H11 -2.331 -0.564 -1.197
H12 1.654 -1.737 1.197
H13 1.654 -1.737 -1.197

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75121.75111.75112.60992.60992.60992.68052.68052.68052.68052.68052.6805
Si21.75123.03313.03311.48064.24343.07191.48101.48103.49663.49664.04174.0417
Si31.75113.03313.03313.07191.48064.24344.04174.04171.48101.48103.49663.4966
Si41.75113.03313.03314.24343.07191.48063.49663.49664.04174.04171.48101.4810
H52.60991.48063.07194.24344.52064.52062.41082.41083.14403.14405.12785.1278
H62.60994.24341.48063.07194.52064.52065.12785.12782.41082.41083.14403.1440
H72.60993.07194.24341.48064.52064.52063.14403.14405.12785.12782.41082.4108
H82.68051.48104.04173.49662.41085.12783.14402.39354.15444.79464.15444.7946
H92.68051.48104.04173.49662.41085.12783.14402.39354.79464.15444.79464.1544
H102.68053.49661.48104.04173.14402.41085.12784.15444.79462.39354.15444.7946
H112.68053.49661.48104.04173.14402.41085.12784.79464.15442.39354.79464.1544
H122.68054.04173.49661.48105.12783.14402.41084.15444.79464.15444.79462.3935
H132.68054.04173.49661.48105.12783.14402.41084.79464.15444.79464.15442.3935

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.428 N1 Si2 H8 111.790
N1 Si2 H9 111.790 N1 Si3 H6 107.428
N1 Si3 H10 111.790 N1 Si3 H11 111.790
N1 Si4 H7 107.428 N1 Si4 H12 111.790
N1 Si4 H13 111.790 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 108.980 H5 Si2 H9 108.980
H6 Si3 H10 108.980 H6 Si3 H11 108.980
H7 Si4 H12 108.980 H7 Si4 H13 108.980
H8 Si2 H9 107.817 H10 Si3 H11 107.817
H12 Si4 H13 107.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.888      
2 Si 0.671      
3 Si 0.671      
4 Si 0.671      
5 H -0.130      
6 H -0.130      
7 H -0.130      
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 -50.923 0.000 0.000
y 0.000 -50.923 0.000
z 0.000 0.000 -52.261
Traceless
 xyz
x 0.669 0.000 0.000
y 0.000 0.669 0.000
z 0.000 0.000 -1.339
Polar
3z2-r2-2.678
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 10.868 0.000 0.000
y 0.000 10.868 0.000
z 0.000 0.000 8.884


<r2> (average value of r2) Å2
<r2> 224.425
(<r2>)1/2 14.981