return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-917.349617
Energy at 298.15K 
HF Energy-917.291477
Nuclear repulsion energy292.933275
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 B2PLYP/STO-3G
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' 2740 2740 0.00 37.75 0.59 0.75
2 A' 2676 2676 0.00 220.19 0.01 0.01
3 A' 1204 1204 0.00 39.66 0.70 0.82
4 A' 1158 1158 0.00 11.44 0.74 0.85
5 A' 754 754 0.00 0.06 0.70 0.82
6 A' 528 528 0.00 9.72 0.11 0.20
7 A" 2711 2711 124.73 0.00 0.75 0.86
8 A" 1141 1141 222.07 0.00 0.75 0.86
9 A" 854 854 265.94 0.00 0.75 0.86
10 A" 199 199 3.14 0.00 0.75 0.86
11 A" 73i 73i 0.08 0.00 0.75 0.86
12 E' 2742 2742 39.65 42.83 0.75 0.86
12 E' 2742 2742 39.65 42.83 0.75 0.86
13 E' 2671 2671 54.28 3.04 0.75 0.86
13 E' 2671 2671 54.28 3.03 0.75 0.86
14 E' 1179 1179 92.51 13.32 0.75 0.86
14 E' 1179 1179 92.51 13.32 0.75 0.86
15 E' 1122 1122 660.00 23.09 0.75 0.86
15 E' 1122 1122 659.98 23.09 0.75 0.86
16 E' 1114 1114 91.92 2.65 0.75 0.86
16 E' 1114 1114 91.92 2.65 0.75 0.86
17 E' 791 791 7.23 8.67 0.75 0.86
17 E' 791 791 7.23 8.67 0.75 0.86
18 E' 225 225 0.82 0.30 0.75 0.86
18 E' 225 225 0.82 0.30 0.75 0.86
19 E" 2709 2709 0.00 72.89 0.75 0.86
19 E" 2709 2709 0.00 72.89 0.75 0.86
20 E" 1138 1138 0.00 28.55 0.75 0.86
20 E" 1138 1138 0.00 28.55 0.75 0.86
21 E" 789 789 0.00 8.11 0.75 0.86
21 E" 789 789 0.00 8.11 0.75 0.86
22 E" 48 48 0.00 0.14 0.75 0.86
22 E" 48 48 0.00 0.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21473.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21473.2 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 B2PLYP/STO-3G
ABC
0.10334 0.10334 0.05438

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.745 0.000
Si3 -1.511 -0.872 0.000
Si4 1.511 -0.872 0.000
H5 -1.362 2.214 0.000
H6 -1.236 -2.286 0.000
H7 2.598 0.073 0.000
H8 0.674 2.278 1.161
H9 0.674 2.278 -1.161
H10 -2.309 -0.556 1.161
H11 -2.309 -0.556 -1.161
H12 1.636 -1.722 1.161
H13 1.636 -1.722 -1.161

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.74451.74451.74452.59892.59892.59892.64382.64382.64382.64382.64382.6438
Si21.74453.02163.02161.44024.21593.08941.44401.44403.46003.46004.00534.0053
Si31.74453.02163.02163.08941.44024.21594.00534.00531.44401.44403.46003.4600
Si41.74453.02163.02164.21593.08941.44023.46003.46004.00534.00531.44401.4440
H52.59891.44023.08944.21594.50144.50142.34392.34393.14853.14855.08175.0817
H62.59894.21591.44023.08944.50144.50145.08175.08172.34392.34393.14853.1485
H72.59893.08944.21591.44024.50144.50143.14853.14855.08175.08172.34392.3439
H82.64381.44404.00533.46002.34395.08173.14852.32134.11434.72394.11434.7239
H92.64381.44404.00533.46002.34395.08173.14852.32134.72394.11434.72394.1143
H102.64383.46001.44404.00533.14852.34395.08174.11434.72392.32134.11434.7239
H112.64383.46001.44404.00533.14852.34395.08174.72394.11432.32134.72394.1143
H122.64384.00533.46001.44405.08173.14852.34394.11434.72394.11434.72392.3213
H132.64384.00533.46001.44405.08173.14852.34394.72394.11434.72394.11432.3213

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 109.005 N1 Si2 H8 111.675
N1 Si2 H9 111.675 N1 Si3 H6 109.005
N1 Si3 H10 111.674 N1 Si3 H11 111.674
N1 Si4 H7 109.005 N1 Si4 H12 111.674
N1 Si4 H13 111.674 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 108.710 H5 Si2 H9 108.710
H6 Si3 H10 108.710 H6 Si3 H11 108.710
H7 Si4 H12 108.710 H7 Si4 H13 108.710
H8 Si2 H9 106.977 H10 Si3 H11 106.977
H12 Si4 H13 106.977
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.745      
2 Si 0.708      
3 Si 0.708      
4 Si 0.708      
5 H -0.150      
6 H -0.150      
7 H -0.150      
8 H -0.154      
9 H -0.154      
10 H -0.154      
11 H -0.154      
12 H -0.154      
13 H -0.154      


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 -46.546 0.000 0.000
y 0.000 -46.546 0.000
z 0.000 0.000 -46.824
Traceless
 xyz
x 0.139 0.000 0.000
y 0.000 0.139 0.000
z 0.000 0.000 -0.279
Polar
3z2-r2-0.557
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 5.723 0.000 0.000
y 0.000 5.723 0.000
z 0.000 0.000 3.966


<r2> (average value of r2) Å2
<r2> 219.151
(<r2>)1/2 14.804