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

using model chemistry: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-928.672378
Energy at 298.15K 
HF Energy-928.672378
Nuclear repulsion energy288.193527
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 B97D3/TZVP
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' 2173 2141 0.00 745.81 0.00 0.00
2 A' 2164 2133 0.00 115.06 0.54 0.70
3 A' 998 983 0.00 11.35 0.75 0.85
4 A' 941 927 0.00 9.96 0.74 0.85
5 A' 637 628 0.00 1.34 0.19 0.32
6 A' 467 461 0.00 16.97 0.08 0.14
7 A" 2161 2130 418.38 0.00 0.75 0.86
8 A" 923 910 165.95 0.00 0.75 0.86
9 A" 712 702 102.71 0.00 0.75 0.86
10 A" 164 161 0.83 0.00 0.75 0.86
11 A" 75 74 0.08 0.00 0.75 0.86
12 E' 2174 2143 229.39 75.99 0.75 0.86
12 E' 2174 2143 229.43 76.03 0.75 0.86
13 E' 2156 2125 92.92 5.34 0.75 0.86
13 E' 2156 2125 92.91 5.33 0.75 0.86
14 E' 976 962 51.21 3.74 0.75 0.86
14 E' 976 962 51.21 3.74 0.75 0.86
15 E' 949 935 181.83 9.24 0.75 0.86
15 E' 949 935 181.84 9.24 0.75 0.86
16 E' 919 906 605.37 19.60 0.75 0.86
16 E' 919 906 605.48 19.58 0.75 0.86
17 E' 673 663 3.58 14.48 0.75 0.86
17 E' 673 663 3.58 14.47 0.75 0.86
18 E' 179 176 0.57 0.19 0.75 0.86
18 E' 179 176 0.57 0.20 0.75 0.86
19 E" 2158 2127 0.00 143.39 0.75 0.86
19 E" 2158 2127 0.00 143.39 0.75 0.86
20 E" 922 908 0.00 26.06 0.75 0.86
20 E" 922 908 0.00 26.03 0.75 0.86
21 E" 670 661 0.00 17.33 0.75 0.86
21 E" 670 661 0.00 17.33 0.75 0.86
22 E" 71 70 0.00 0.55 0.75 0.86
22 E" 71 70 0.00 0.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17553.6 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 17300.8 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 B97D3/TZVP
ABC
0.10052 0.10052 0.05307

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.765 0.000
Si3 -1.529 -0.883 0.000
Si4 1.529 -0.883 0.000
H5 -1.428 2.210 0.000
H6 -1.200 -2.341 0.000
H7 2.627 0.132 0.000
H8 0.687 2.312 1.211
H9 0.687 2.312 -1.211
H10 -2.346 -0.561 1.211
H11 -2.346 -0.561 -1.211
H12 1.659 -1.751 1.211
H13 1.659 -1.751 -1.211

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.76541.76541.76542.63072.63072.63072.69912.69912.69912.69912.69912.6991
Si21.76543.05773.05771.49534.27833.09381.49601.49603.51913.51914.07224.0722
Si31.76543.05773.05773.09381.49534.27834.07224.07221.49601.49603.51913.5191
Si41.76543.05773.05774.27833.09381.49533.51913.51914.07224.07221.49601.4960
H52.63071.49533.09384.27834.55654.55652.43912.43913.16043.16045.16535.1653
H62.63074.27831.49533.09384.55654.55655.16535.16532.43912.43913.16043.1604
H72.63073.09384.27831.49534.55654.55653.16043.16045.16535.16532.43912.4391
H82.69911.49604.07223.51912.43915.16533.16042.42274.17774.82944.17774.8294
H92.69911.49604.07223.51912.43915.16533.16042.42274.82944.17774.82944.1777
H102.69913.51911.49604.07223.16042.43915.16534.17774.82942.42274.17774.8294
H112.69913.51911.49604.07223.16042.43915.16534.82944.17772.42274.82944.1777
H122.69914.07223.51911.49605.16533.16042.43914.17774.82944.17774.82942.4227
H132.69914.07223.51911.49605.16533.16042.43914.82944.17774.82944.17772.4227

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.279 N1 Si2 H8 111.441
N1 Si2 H9 111.441 N1 Si3 H6 107.279
N1 Si3 H10 111.441 N1 Si3 H11 111.441
N1 Si4 H7 107.279 N1 Si4 H12 111.441
N1 Si4 H13 111.441 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.252 H5 Si2 H9 109.252
H6 Si3 H10 109.252 H6 Si3 H11 109.252
H7 Si4 H12 109.252 H7 Si4 H13 109.252
H8 Si2 H9 108.143 H10 Si3 H11 108.143
H12 Si4 H13 108.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.588      
2 Si 0.458      
3 Si 0.458      
4 Si 0.458      
5 H -0.090      
6 H -0.090      
7 H -0.090      
8 H -0.086      
9 H -0.086      
10 H -0.086      
11 H -0.086      
12 H -0.086      
13 H -0.086      


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 -51.481 0.000 0.000
y 0.000 -51.481 0.000
z 0.000 0.000 -52.761
Traceless
 xyz
x 0.640 0.000 0.000
y 0.000 0.640 0.000
z 0.000 0.000 -1.280
Polar
3z2-r2-2.560
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 13.036 0.000 0.000
y 0.000 13.036 0.000
z 0.000 0.000 11.063


<r2> (average value of r2) Å2
<r2> 227.786
(<r2>)1/2 15.093