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

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-928.842112
Energy at 298.15K 
HF Energy-928.842112
Nuclear repulsion energy291.522381
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 B3LYP/cc-pVQZ
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' 2236 2167 0.00 806.48 0.00 0.00
2 A' 2219 2150 0.00 76.38 0.74 0.85
3 A' 1030 998 0.00 2.60 0.74 0.85
4 A' 970 940 0.00 6.24 0.75 0.86
5 A' 659 638 0.00 0.44 0.17 0.29
6 A' 484 468 0.00 18.25 0.05 0.09
7 A" 2221 2151 385.27 0.00 0.75 0.86
8 A" 954 924 171.06 0.00 0.75 0.86
9 A" 749 725 106.26 0.00 0.75 0.86
10 A" 179 173 0.29 0.00 0.75 0.86
11 A" 104 100 0.31 0.00 0.75 0.86
12 E' 2230 2161 255.24 57.26 0.75 0.86
12 E' 2230 2161 255.27 57.27 0.75 0.86
13 E' 2221 2152 42.47 8.14 0.75 0.86
13 E' 2221 2152 42.48 8.16 0.75 0.86
14 E' 1008 976 42.40 2.60 0.75 0.86
14 E' 1008 976 42.38 2.60 0.75 0.86
15 E' 978 947 194.57 5.83 0.75 0.86
15 E' 978 947 194.56 5.83 0.75 0.86
16 E' 951 921 607.72 5.72 0.75 0.86
16 E' 951 921 607.80 5.71 0.75 0.86
17 E' 694 672 2.16 6.67 0.75 0.86
17 E' 694 672 2.17 6.67 0.75 0.86
18 E' 180 174 0.49 0.12 0.75 0.86
18 E' 179 174 0.49 0.12 0.75 0.86
19 E" 2218 2149 0.00 119.01 0.75 0.86
19 E" 2218 2149 0.00 119.05 0.75 0.86
20 E" 952 922 0.00 11.62 0.75 0.86
20 E" 952 922 0.00 11.63 0.75 0.86
21 E" 695 673 0.00 5.96 0.75 0.86
21 E" 695 673 0.00 5.95 0.75 0.86
22 E" 82 79 0.00 0.14 0.75 0.86
22 E" 82 79 0.00 0.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18108.5 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 17543.6 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 B3LYP/cc-pVQZ
ABC
0.10290 0.10290 0.05434

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.744 0.000
Si3 -1.510 -0.872 0.000
Si4 1.510 -0.872 0.000
H5 -1.413 2.190 0.000
H6 -1.190 -2.319 0.000
H7 2.603 0.129 0.000
H8 0.680 2.287 1.199
H9 0.680 2.287 -1.199
H10 -2.320 -0.555 1.199
H11 -2.320 -0.555 -1.199
H12 1.641 -1.732 1.199
H13 1.641 -1.732 -1.199

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.74401.74401.74402.60612.60612.60612.67022.67022.67022.67022.67022.6702
Si21.74403.02083.02081.48154.23333.06351.48141.48143.47953.47954.02674.0267
Si31.74403.02083.02083.06351.48154.23334.02674.02671.48141.48143.47953.4795
Si41.74403.02083.02084.23333.06351.48153.47953.47954.02674.02671.48141.4814
H52.60611.48153.06354.23334.51394.51392.41382.41383.12963.12965.11325.1132
H62.60614.23331.48153.06354.51394.51395.11325.11322.41382.41383.12963.1296
H72.60613.06354.23331.48154.51394.51393.12963.12965.11325.11322.41382.4138
H82.67021.48144.02673.47952.41385.11323.12962.39814.13254.77794.13254.7779
H92.67021.48144.02673.47952.41385.11323.12962.39814.77794.13254.77794.1325
H102.67023.47951.48144.02673.12962.41385.11324.13254.77792.39814.13254.7779
H112.67023.47951.48144.02673.12962.41385.11324.77794.13252.39814.77794.1325
H122.67024.02673.47951.48145.11323.12962.41384.13254.77794.13254.77792.3981
H132.67024.02673.47951.48145.11323.12962.41384.77794.13254.77794.13252.3981

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.514 N1 Si2 H8 111.499
N1 Si2 H9 111.499 N1 Si3 H6 107.514
N1 Si3 H10 111.499 N1 Si3 H11 111.499
N1 Si4 H7 107.514 N1 Si4 H12 111.499
N1 Si4 H13 111.499 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.107 H5 Si2 H9 109.107
H6 Si3 H10 109.107 H6 Si3 H11 109.107
H7 Si4 H12 109.107 H7 Si4 H13 109.107
H8 Si2 H9 108.071 H10 Si3 H11 108.071
H12 Si4 H13 108.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.800      
2 Si 0.434      
3 Si 0.434      
4 Si 0.434      
5 H -0.052      
6 H -0.052      
7 H -0.052      
8 H -0.058      
9 H -0.058      
10 H -0.058      
11 H -0.058      
12 H -0.058      
13 H -0.058      


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 -51.779 0.000 0.000
y 0.000 -51.779 0.000
z 0.000 0.000 -52.640
Traceless
 xyz
x 0.430 0.000 0.000
y 0.000 0.430 0.000
z 0.000 0.000 -0.860
Polar
3z2-r2-1.720
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 13.559 0.000 0.000
y 0.000 13.559 0.000
z 0.000 0.000 11.325


<r2> (average value of r2) Å2
<r2> 223.427
(<r2>)1/2 14.947