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

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-928.673405
Energy at 298.15K 
HF Energy-928.673405
Nuclear repulsion energy287.623016
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 BLYP/6-311G**
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' 2175 2166 0.00 731.52 0.00 0.00
2 A' 2165 2156 0.00 137.10 0.40 0.57
3 A' 1010 1006 0.00 14.36 0.74 0.85
4 A' 945 941 0.00 12.35 0.74 0.85
5 A' 638 636 0.00 1.02 0.09 0.17
6 A' 463 461 0.00 18.59 0.08 0.15
7 A" 2162 2154 404.86 0.00 0.75 0.86
8 A" 926 923 182.15 0.00 0.75 0.86
9 A" 718 715 109.93 0.00 0.75 0.86
10 A" 188 187 0.86 0.00 0.75 0.86
11 A" 77 77 0.14 0.00 0.75 0.86
12 E' 2176 2167 223.54 76.18 0.75 0.86
12 E' 2176 2167 223.59 76.19 0.75 0.86
13 E' 2158 2149 88.67 7.92 0.75 0.86
13 E' 2158 2149 88.66 7.92 0.75 0.86
14 E' 971 967 29.65 7.41 0.75 0.86
14 E' 971 967 29.66 7.41 0.75 0.86
15 E' 950 946 150.93 11.94 0.75 0.86
15 E' 950 946 150.93 11.94 0.75 0.86
16 E' 921 917 686.60 19.87 0.75 0.86
16 E' 921 917 686.67 19.86 0.75 0.86
17 E' 669 667 5.06 14.32 0.75 0.86
17 E' 669 667 5.06 14.32 0.75 0.86
18 E' 182 181 0.56 0.20 0.75 0.86
18 E' 182 181 0.56 0.20 0.75 0.86
19 E" 2159 2151 0.00 145.39 0.75 0.86
19 E" 2159 2151 0.00 145.38 0.75 0.86
20 E" 923 920 0.00 28.11 0.75 0.86
20 E" 923 920 0.00 28.12 0.75 0.86
21 E" 673 670 0.00 17.01 0.75 0.86
21 E" 673 670 0.00 17.01 0.75 0.86
22 E" 73 73 0.00 0.53 0.75 0.86
22 E" 73 73 0.00 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17586.6 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 17518.0 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 BLYP/6-311G**
ABC
0.10005 0.10005 0.05279

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.770 0.000
Si3 -1.533 -0.885 0.000
Si4 1.533 -0.885 0.000
H5 -1.426 2.216 0.000
H6 -1.206 -2.343 0.000
H7 2.632 0.127 0.000
H8 0.682 2.325 1.209
H9 0.682 2.325 -1.209
H10 -2.355 -0.572 1.209
H11 -2.355 -0.572 -1.209
H12 1.673 -1.753 1.209
H13 1.673 -1.753 -1.209

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.76961.76961.76962.63512.63512.63512.70792.70792.70792.70792.70792.7079
Si21.76963.06513.06511.49404.28563.10271.49471.49473.53413.53414.08274.0827
Si31.76963.06513.06513.10271.49404.28564.08274.08271.49471.49473.53413.5341
Si41.76963.06513.06514.28563.10271.49403.53413.53414.08274.08271.49471.4947
H52.63511.49403.10274.28564.56404.56402.43182.43183.17783.17785.17855.1785
H62.63514.28561.49403.10274.56404.56405.17855.17852.43182.43183.17783.1778
H72.63513.10274.28561.49404.56404.56403.17783.17785.17855.17852.43182.4318
H82.70791.49474.08273.53412.43185.17853.17782.41714.19724.84344.19724.8434
H92.70791.49474.08273.53412.43185.17853.17782.41714.84344.19724.84344.1972
H102.70793.53411.49474.08273.17782.43185.17854.19724.84342.41714.19724.8434
H112.70793.53411.49474.08273.17782.43185.17854.84344.19722.41714.84344.1972
H122.70794.08273.53411.49475.17853.17782.43184.19724.84344.19724.84342.4171
H132.70794.08273.53411.49475.17853.17782.43184.84344.19724.84344.19722.4171

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.386 N1 Si2 H8 111.828
N1 Si2 H9 111.828 N1 Si3 H6 107.386
N1 Si3 H10 111.828 N1 Si3 H11 111.828
N1 Si4 H7 107.386 N1 Si4 H12 111.828
N1 Si4 H13 111.828 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 108.913 H5 Si2 H9 108.913
H6 Si3 H10 108.913 H6 Si3 H11 108.913
H7 Si4 H12 108.913 H7 Si4 H13 108.913
H8 Si2 H9 107.908 H10 Si3 H11 107.908
H12 Si4 H13 107.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.047      
2 Si 0.735      
3 Si 0.735      
4 Si 0.735      
5 H -0.132      
6 H -0.132      
7 H -0.132      
8 H -0.127      
9 H -0.127      
10 H -0.127      
11 H -0.127      
12 H -0.127      
13 H -0.127      


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 -51.957 0.000 0.000
y 0.000 -51.957 0.000
z 0.000 0.000 -53.323
Traceless
 xyz
x 0.683 0.000 0.000
y 0.000 0.683 0.000
z 0.000 0.000 -1.366
Polar
3z2-r2-2.732
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 12.979 0.000 0.000
y 0.000 12.979 0.000
z 0.000 0.000 10.928


<r2> (average value of r2) Å2
<r2> 229.087
(<r2>)1/2 15.136