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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-928.247942
Energy at 298.15K 
HF Energy-928.247942
Nuclear repulsion energy290.453036
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 HSEh1PBE/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' 2249 2147 0.00 754.83 0.00 0.00
2 A' 2237 2136 0.00 96.21 0.70 0.82
3 A' 1016 970 0.00 7.58 0.73 0.84
4 A' 960 916 0.00 7.84 0.74 0.85
5 A' 653 623 0.00 0.50 0.28 0.44
6 A' 485 463 0.00 16.33 0.06 0.12
7 A" 2239 2138 446.85 0.00 0.75 0.86
8 A" 943 901 171.23 0.00 0.75 0.86
9 A" 739 706 111.30 0.00 0.75 0.86
10 A" 169 162 1.28 0.00 0.75 0.86
11 A" 86 82 0.09 0.00 0.75 0.86
12 E' 2248 2146 265.79 72.61 0.75 0.86
12 E' 2248 2146 265.84 72.60 0.75 0.86
13 E' 2233 2132 80.84 2.63 0.75 0.86
13 E' 2233 2132 80.84 2.63 0.75 0.86
14 E' 1010 964 124.06 2.36 0.75 0.86
14 E' 1010 964 124.06 2.36 0.75 0.86
15 E' 970 926 206.43 7.85 0.75 0.86
15 E' 970 926 206.44 7.85 0.75 0.86
16 E' 941 899 553.13 18.94 0.75 0.86
16 E' 941 899 553.14 18.94 0.75 0.86
17 E' 690 659 1.79 12.21 0.75 0.86
17 E' 690 659 1.79 12.21 0.75 0.86
18 E' 169 161 0.43 0.22 0.75 0.86
18 E' 169 161 0.43 0.22 0.75 0.86
19 E" 2236 2135 0.00 131.44 0.75 0.86
19 E" 2236 2135 0.00 131.42 0.75 0.86
20 E" 941 899 0.00 20.07 0.75 0.86
20 E" 941 899 0.00 20.08 0.75 0.86
21 E" 686 655 0.00 11.21 0.75 0.86
21 E" 686 655 0.00 11.21 0.75 0.86
22 E" 77 74 0.00 0.91 0.75 0.86
22 E" 77 74 0.00 0.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18088.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 17270.5 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 HSEh1PBE/6-31+G**
ABC
0.10219 0.10219 0.05397

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 1.750 0.000
Si3 -1.516 -0.875 0.000
Si4 1.516 -0.875 0.000
H5 -1.422 2.193 0.000
H6 -1.188 -2.328 0.000
H7 2.610 0.135 0.000
H8 0.683 2.295 1.206
H9 0.683 2.295 -1.206
H10 -2.329 -0.556 1.206
H11 -2.329 -0.556 -1.206
H12 1.646 -1.739 1.206
H13 1.646 -1.739 -1.206

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75001.75001.75002.61362.61362.61362.68062.68062.68062.68062.68062.6806
Si21.75003.03113.03111.48924.24753.06941.48901.48903.49193.49194.04164.0416
Si31.75003.03113.03113.06941.48924.24754.04164.04161.48901.48903.49193.4919
Si41.75003.03113.03114.24753.06941.48923.49193.49194.04164.04161.48901.4890
H52.61361.48923.06944.24754.52694.52692.42802.42803.13563.13565.13065.1306
H62.61364.24751.48923.06944.52694.52695.13065.13062.42802.42803.13563.1356
H72.61363.06944.24751.48924.52694.52693.13563.13565.13065.13062.42802.4280
H82.68061.48904.04163.49192.42805.13063.13562.41144.14684.79704.14684.7970
H92.68061.48904.04163.49192.42805.13063.13562.41144.79704.14684.79704.1468
H102.68063.49191.48904.04163.13562.42805.13064.14684.79702.41144.14684.7970
H112.68063.49191.48904.04163.13562.42805.13064.79704.14682.41144.79704.1468
H122.68064.04163.49191.48905.13063.13562.42804.14684.79704.14684.79702.4114
H132.68064.04163.49191.48905.13063.13562.42804.79704.14684.79704.14682.4114

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.305 N1 Si2 H8 111.456
N1 Si2 H9 111.456 N1 Si3 H6 107.305
N1 Si3 H10 111.456 N1 Si3 H11 111.456
N1 Si4 H7 107.305 N1 Si4 H12 111.456
N1 Si4 H13 111.456 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.222 H5 Si2 H9 109.222
H6 Si3 H10 109.222 H6 Si3 H11 109.222
H7 Si4 H12 109.222 H7 Si4 H13 109.222
H8 Si2 H9 108.145 H10 Si3 H11 108.145
H12 Si4 H13 108.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.059      
2 Si 0.631      
3 Si 0.631      
4 Si 0.631      
5 H -0.095      
6 H -0.095      
7 H -0.095      
8 H -0.091      
9 H -0.091      
10 H -0.091      
11 H -0.091      
12 H -0.091      
13 H -0.091      


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 -51.171 0.000 0.000
y 0.000 -51.171 0.000
z 0.000 0.000 -52.858
Traceless
 xyz
x 0.843 0.000 0.000
y 0.000 0.843 0.000
z 0.000 0.000 -1.687
Polar
3z2-r2-3.374
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 12.474 -0.000 0.000
y -0.000 12.474 0.000
z 0.000 0.000 10.744


<r2> (average value of r2) Å2
<r2> 224.546
(<r2>)1/2 14.985