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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-928.744268
Energy at 298.15K 
HF Energy-928.744268
Nuclear repulsion energy291.714749
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 B1B95/6-311G*
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' 2249 2156 0.00 713.26 0.00 0.01
2 A' 2233 2141 0.00 95.52 0.67 0.80
3 A' 1029 987 0.00 17.30 0.73 0.85
4 A' 961 921 0.00 12.27 0.73 0.84
5 A' 651 624 0.00 0.94 0.06 0.12
6 A' 492 472 0.00 13.57 0.09 0.16
7 A" 2237 2145 413.15 0.00 0.75 0.86
8 A" 946 907 203.75 0.00 0.75 0.86
9 A" 746 715 128.48 0.00 0.75 0.86
10 A" 177 170 0.76 0.00 0.75 0.86
11 A" 84 80 0.13 0.00 0.75 0.86
12 E' 2244 2151 266.44 73.22 0.75 0.86
12 E' 2244 2151 266.52 73.22 0.75 0.86
13 E' 2234 2141 47.91 1.62 0.75 0.86
13 E' 2234 2141 47.89 1.62 0.75 0.86
14 E' 1017 975 120.35 2.95 0.75 0.86
14 E' 1017 975 120.31 2.95 0.75 0.86
15 E' 974 934 297.16 7.42 0.75 0.86
15 E' 974 934 297.15 7.41 0.75 0.86
16 E' 945 906 529.66 29.89 0.75 0.86
16 E' 945 906 529.77 29.88 0.75 0.86
17 E' 689 660 0.86 14.18 0.75 0.86
17 E' 689 660 0.86 14.16 0.75 0.86
18 E' 161 154 0.58 0.30 0.75 0.86
18 E' 161 154 0.58 0.30 0.75 0.86
19 E" 2234 2141 0.00 134.48 0.75 0.86
19 E" 2234 2141 0.00 134.44 0.75 0.86
20 E" 941 902 0.00 30.16 0.75 0.86
20 E" 941 902 0.00 30.21 0.75 0.86
21 E" 689 661 0.00 16.55 0.75 0.86
21 E" 689 661 0.00 16.53 0.75 0.86
22 E" 77 73 0.00 0.50 0.75 0.86
22 E" 77 73 0.00 0.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18105.2 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 17355.7 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 B1B95/6-311G*
ABC
0.10309 0.10309 0.05445

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.742 0.000
Si3 -1.509 -0.871 0.000
Si4 1.509 -0.871 0.000
H5 -1.418 2.179 0.000
H6 -1.178 -2.318 0.000
H7 2.596 0.139 0.000
H8 0.677 2.291 1.200
H9 0.677 2.291 -1.200
H10 -2.323 -0.559 1.200
H11 -2.323 -0.559 -1.200
H12 1.646 -1.732 1.200
H13 1.646 -1.732 -1.200

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.74191.74191.74192.60012.60012.60012.67362.67362.67362.67362.67362.6736
Si21.74193.01703.01701.48414.22723.05161.48351.48353.48283.48284.02694.0269
Si31.74193.01703.01703.05161.48414.22724.02694.02691.48351.48353.48283.4828
Si41.74193.01703.01704.22723.05161.48413.48283.48284.02694.02691.48351.4835
H52.60011.48413.05164.22724.50354.50352.41742.41743.12363.12365.11135.1113
H62.60014.22721.48413.05164.50354.50355.11135.11132.41742.41743.12363.1236
H72.60013.05164.22721.48414.50354.50353.12363.12365.11135.11132.41742.4174
H82.67361.48354.02693.48282.41745.11133.12362.40044.13804.78384.13804.7838
H92.67361.48354.02693.48282.41745.11133.12362.40044.78384.13804.78384.1380
H102.67363.48281.48354.02693.12362.41745.11134.13804.78382.40044.13804.7838
H112.67363.48281.48354.02693.12362.41745.11134.78384.13802.40044.78384.1380
H122.67364.02693.48281.48355.11133.12362.41744.13804.78384.13804.78382.4004
H132.67364.02693.48281.48355.11133.12362.41744.78384.13804.78384.13802.4004

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.142 N1 Si2 H8 111.729
N1 Si2 H9 111.729 N1 Si3 H6 107.142
N1 Si3 H10 111.729 N1 Si3 H11 111.729
N1 Si4 H7 107.142 N1 Si4 H12 111.729
N1 Si4 H13 111.729 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.094 H5 Si2 H9 109.094
H6 Si3 H10 109.094 H6 Si3 H11 109.094
H7 Si4 H12 109.094 H7 Si4 H13 109.094
H8 Si2 H9 108.004 H10 Si3 H11 108.004
H12 Si4 H13 108.004
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.073      
2 Si 0.582      
3 Si 0.582      
4 Si 0.582      
5 H -0.081      
6 H -0.081      
7 H -0.081      
8 H -0.072      
9 H -0.072      
10 H -0.072      
11 H -0.072      
12 H -0.072      
13 H -0.072      


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 -51.088 0.000 0.000
y 0.000 -51.088 0.000
z 0.000 0.000 -52.530
Traceless
 xyz
x 0.721 0.000 0.000
y 0.000 0.721 0.000
z 0.000 0.000 -1.442
Polar
3z2-r2-2.883
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 11.870 -0.001 0.000
y -0.001 11.870 0.000
z 0.000 0.000 10.234


<r2> (average value of r2) Å2
<r2> 222.813
(<r2>)1/2 14.927