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

using model chemistry: B2PLYP=FULLultrafine/TZVP

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/TZVP
 hartrees
Energy at 0K-928.299367
Energy at 298.15K 
HF Energy-928.097649
Nuclear repulsion energy289.684706
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/TZVP
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' 2257 2257 0.00 721.93 0.00 0.00
2 A' 2244 2244 0.00 86.20 0.75 0.86
3 A' 1037 1037 0.00 11.45 0.74 0.85
4 A' 980 980 0.00 10.38 0.74 0.85
5 A' 661 661 0.00 1.04 0.18 0.31
6 A' 482 482 0.00 15.21 0.07 0.14
7 A" 2245 2245 417.58 0.00 0.75 0.86
8 A" 964 964 201.27 0.00 0.75 0.86
9 A" 743 743 124.00 0.00 0.75 0.86
10 A" 168 168 0.91 0.00 0.75 0.86
11 A" 94 94 0.06 0.00 0.75 0.86
12 E' 2254 2254 252.65 70.90 0.75 0.86
12 E' 2254 2254 252.72 70.90 0.75 0.86
13 E' 2242 2242 63.11 1.90 0.75 0.86
13 E' 2242 2242 63.12 1.91 0.75 0.86
14 E' 1014 1014 57.98 4.49 0.75 0.86
14 E' 1014 1014 57.97 4.49 0.75 0.86
15 E' 988 988 183.99 8.19 0.75 0.86
15 E' 988 988 183.95 8.20 0.75 0.86
16 E' 954 954 689.56 18.68 0.75 0.86
16 E' 954 954 689.55 18.68 0.75 0.86
17 E' 696 696 2.51 13.47 0.75 0.86
17 E' 696 696 2.51 13.47 0.75 0.86
18 E' 181 181 0.60 0.16 0.75 0.86
18 E' 181 181 0.60 0.16 0.75 0.86
19 E" 2242 2242 0.00 128.98 0.75 0.86
19 E" 2242 2242 0.00 128.98 0.75 0.86
20 E" 960 960 0.00 25.75 0.75 0.86
20 E" 960 960 0.00 25.75 0.75 0.86
21 E" 694 694 0.00 16.19 0.75 0.86
21 E" 694 694 0.00 16.19 0.75 0.86
22 E" 81 81 0.00 0.47 0.75 0.86
22 E" 81 81 0.00 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18244.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18244.1 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/TZVP
ABC
0.10149 0.10149 0.05356

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/TZVP

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.757 0.000
Si3 -1.522 -0.879 0.000
Si4 1.522 -0.879 0.000
H5 -1.417 2.199 0.000
H6 -1.197 -2.327 0.000
H7 2.613 0.127 0.000
H8 0.681 2.301 1.201
H9 0.681 2.301 -1.201
H10 -2.333 -0.561 1.201
H11 -2.333 -0.561 -1.201
H12 1.652 -1.740 1.201
H13 1.652 -1.740 -1.201

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75751.75751.75752.61622.61622.61622.68362.68362.68362.68362.68362.6836
Si21.75753.04403.04401.48404.25573.08001.48401.48403.50153.50154.05074.0507
Si31.75753.04403.04403.08001.48404.25574.05074.05071.48401.48403.50153.5015
Si41.75753.04403.04404.25573.08001.48403.50153.50154.05074.05071.48401.4840
H52.61621.48403.08004.25574.53144.53142.41952.41953.14663.14665.13655.1365
H62.61624.25571.48403.08004.53144.53145.13655.13652.41952.41953.14663.1466
H72.61623.08004.25571.48404.53144.53143.14663.14665.13655.13652.41952.4195
H82.68361.48404.05073.50152.41955.13653.14662.40234.15644.80084.15644.8008
H92.68361.48404.05073.50152.41955.13653.14662.40234.80084.15644.80084.1564
H102.68363.50151.48404.05073.14662.41955.13654.15644.80082.40234.15644.8008
H112.68363.50151.48404.05073.14662.41955.13654.80084.15642.40234.80084.1564
H122.68364.05073.50151.48405.13653.14662.41954.15644.80084.15644.80082.4023
H132.68364.05073.50151.48405.13653.14662.41954.80084.15644.80084.15642.4023

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.329 N1 Si2 H8 111.485
N1 Si2 H9 111.485 N1 Si3 H6 107.329
N1 Si3 H10 111.485 N1 Si3 H11 111.485
N1 Si4 H7 107.329 N1 Si4 H12 111.485
N1 Si4 H13 111.485 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.215 H5 Si2 H9 109.215
H6 Si3 H10 109.215 H6 Si3 H11 109.215
H7 Si4 H12 109.215 H7 Si4 H13 109.215
H8 Si2 H9 108.075 H10 Si3 H11 108.075
H12 Si4 H13 108.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.639      
2 Si 0.550      
3 Si 0.550      
4 Si 0.550      
5 H -0.116      
6 H -0.116      
7 H -0.116      
8 H -0.111      
9 H -0.111      
10 H -0.111      
11 H -0.111      
12 H -0.111      
13 H -0.111      


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 -51.856 0.000 0.000
y 0.000 -51.856 0.000
z 0.000 0.000 -53.146
Traceless
 xyz
x 0.645 0.000 0.000
y 0.000 0.645 0.000
z 0.000 0.000 -1.291
Polar
3z2-r2-2.582
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 12.255 0.000 0.000
y 0.000 12.255 0.000
z 0.000 0.000 10.518


<r2> (average value of r2) Å2
<r2> 226.125
(<r2>)1/2 15.037