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

using model chemistry: B2PLYP=FULLultrafine/3-21G

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=FULLultrafine/3-21G
 hartrees
Energy at 0K-923.218663
Energy at 298.15K 
HF Energy-923.116255
Nuclear repulsion energy285.583150
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=FULLultrafine/3-21G
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' 2205 2205 0.00 563.58 0.00 0.00
2 A' 2191 2191 0.00 91.53 0.55 0.71
3 A' 1044 1044 0.00 35.43 0.74 0.85
4 A' 971 971 0.00 19.32 0.74 0.85
5 A' 650 650 0.00 0.56 0.00 0.00
6 A' 473 473 0.00 20.58 0.10 0.18
7 A" 2186 2186 461.10 0.00 0.75 0.86
8 A" 942 942 232.08 0.00 0.75 0.86
9 A" 758 758 160.11 0.00 0.75 0.86
10 A" 238 238 0.71 0.00 0.75 0.86
11 A" 69i 69i 0.01 0.00 0.75 0.86
12 E' 2202 2202 251.63 66.23 0.75 0.86
12 E' 2202 2202 251.74 66.24 0.75 0.86
13 E' 2187 2187 112.06 7.99 0.75 0.86
13 E' 2187 2187 111.98 7.99 0.75 0.86
14 E' 1019 1019 7.78 5.54 0.75 0.86
14 E' 1019 1019 7.77 5.54 0.75 0.86
15 E' 986 986 421.06 15.59 0.75 0.86
15 E' 986 986 421.08 15.58 0.75 0.86
16 E' 955 955 502.30 47.83 0.75 0.86
16 E' 955 955 502.26 47.83 0.75 0.86
17 E' 691 691 2.47 14.83 0.75 0.86
17 E' 691 691 2.47 14.83 0.75 0.86
18 E' 206 206 0.35 0.13 0.75 0.86
18 E' 206 206 0.35 0.13 0.75 0.86
19 E" 2182 2182 0.00 110.16 0.75 0.86
19 E" 2182 2182 0.00 110.15 0.75 0.86
20 E" 936 936 0.00 43.67 0.75 0.86
20 E" 936 936 0.00 43.67 0.75 0.86
21 E" 688 688 0.00 18.82 0.75 0.86
21 E" 688 688 0.00 18.82 0.75 0.86
22 E" 53 53 0.00 0.75 0.75 0.86
22 E" 53 53 0.00 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17897.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17897.1 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=FULLultrafine/3-21G
ABC
0.09851 0.09851 0.05194

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.784 0.000
Si3 -1.545 -0.892 0.000
Si4 1.545 -0.892 0.000
H5 -1.429 2.232 0.000
H6 -1.219 -2.353 0.000
H7 2.647 0.121 0.000
H8 0.676 2.356 1.208
H9 0.676 2.356 -1.208
H10 -2.379 -0.592 1.208
H11 -2.379 -0.592 -1.208
H12 1.703 -1.764 1.208
H13 1.703 -1.764 -1.208

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.78361.78361.78362.65012.65012.65012.73322.73322.73322.73322.73322.7332
Si21.78363.08933.08931.49734.31263.12601.49851.49853.57293.57294.11644.1164
Si31.78363.08933.08933.12601.49734.31264.11644.11641.49851.49853.57293.5729
Si41.78363.08933.08934.31263.12601.49733.57293.57294.11644.11641.49851.4985
H52.65011.49733.12604.31264.59014.59012.43032.43033.21583.21585.21855.2185
H62.65014.31261.49733.12604.59014.59015.21855.21852.43032.43033.21583.2158
H72.65013.12604.31261.49734.59014.59013.21583.21585.21855.21852.43032.4303
H82.73321.49854.11643.57292.43035.21853.21582.41654.24644.88584.24644.8858
H92.73321.49854.11643.57292.43035.21853.21582.41654.88584.24644.88584.2464
H102.73323.57291.49854.11643.21582.43035.21854.24644.88582.41654.24644.8858
H112.73323.57291.49854.11643.21582.43035.21854.88584.24642.41654.88584.2464
H122.73324.11643.57291.49855.21853.21582.43034.24644.88584.24644.88582.4165
H132.73324.11643.57291.49855.21853.21582.43034.88584.24644.88584.24642.4165

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.427 N1 Si2 H8 112.476
N1 Si2 H9 112.476 N1 Si3 H6 107.427
N1 Si3 H10 112.476 N1 Si3 H11 112.476
N1 Si4 H7 107.427 N1 Si4 H12 112.476
N1 Si4 H13 112.476 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 108.431 H5 Si2 H9 108.431
H6 Si3 H10 108.431 H6 Si3 H11 108.431
H7 Si4 H12 108.431 H7 Si4 H13 108.431
H8 Si2 H9 107.472 H10 Si3 H11 107.472
H12 Si4 H13 107.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.180      
2 Si 0.851      
3 Si 0.851      
4 Si 0.851      
5 H -0.157      
6 H -0.157      
7 H -0.157      
8 H -0.151      
9 H -0.151      
10 H -0.151      
11 H -0.151      
12 H -0.151      
13 H -0.151      


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 -52.984 0.000 0.000
y 0.000 -52.984 0.000
z 0.000 0.000 -54.834
Traceless
 xyz
x 0.925 0.000 0.000
y 0.000 0.925 0.000
z 0.000 0.000 -1.850
Polar
3z2-r2-3.701
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 10.890 0.000 0.000
y 0.000 10.890 0.000
z 0.000 0.000 8.722


<r2> (average value of r2) Å2
<r2> 232.985
(<r2>)1/2 15.264