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/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-928.340186
Energy at 298.15K 
HF Energy-928.139614
Nuclear repulsion energy291.044873
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/aug-cc-pVTZ
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' 2256 2168 0.02 872.07 0.00 0.00
2 A' 2244 2156 0.00 69.27 0.75 0.86
3 A' 1034 993 0.00 1.93 0.73 0.84
4 A' 977 938 0.00 5.19 0.75 0.86
5 A' 659 634 0.00 0.34 0.21 0.35
6 A' 484 465 0.00 20.49 0.05 0.09
7 A" 2246 2158 386.37 0.00 0.75 0.86
8 A" 962 924 176.92 0.00 0.75 0.86
9 A" 747 717 108.24 0.00 0.75 0.86
10 A" 171 164 0.37 0.00 0.75 0.86
11 A" 98 94 0.26 0.00 0.75 0.86
12 E' 2254 2166 239.33 59.88 0.75 0.86
12 E' 2254 2166 239.63 59.83 0.75 0.86
13 E' 2242 2155 59.96 4.32 0.75 0.86
13 E' 2242 2154 60.26 4.23 0.75 0.86
14 E' 1014 974 54.20 2.77 0.75 0.86
14 E' 1014 974 54.51 2.76 0.75 0.86
15 E' 985 946 186.57 5.30 0.75 0.86
15 E' 985 946 186.09 5.32 0.75 0.86
16 E' 954 917 620.05 5.20 0.75 0.86
16 E' 954 917 620.18 5.15 0.75 0.86
17 E' 696 669 1.65 4.96 0.75 0.86
17 E' 696 669 1.65 4.99 0.75 0.86
18 E' 177 170 0.51 0.17 0.75 0.86
18 E' 177 170 0.51 0.18 0.75 0.86
19 E" 2243 2155 0.00 117.38 0.75 0.86
19 E" 2243 2155 0.00 116.97 0.75 0.86
20 E" 959 921 0.00 9.28 0.75 0.86
20 E" 959 921 0.00 9.29 0.75 0.86
21 E" 696 669 0.00 4.07 0.75 0.86
21 E" 696 669 0.00 4.10 0.75 0.86
22 E" 80 77 0.00 0.11 0.75 0.86
22 E" 79 76 0.00 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18236.2 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 17525.0 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/aug-cc-pVTZ
ABC
0.10253 0.10253 0.05413

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.748 0.000
Si3 -1.514 -0.874 0.000
Si4 1.514 -0.874 0.000
H5 -1.414 2.192 0.000
H6 -1.191 -2.320 0.000
H7 2.605 0.129 0.000
H8 0.681 2.289 1.199
H9 0.681 2.289 -1.199
H10 -2.323 -0.555 1.199
H11 -2.323 -0.555 -1.199
H12 1.642 -1.735 1.199
H13 1.642 -1.735 -1.199

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.74781.74781.74782.60802.60802.60802.67262.67262.67262.67262.67262.6726
Si21.74783.02733.02731.48184.23873.06701.48151.48153.48383.48384.03254.0325
Si31.74783.02733.02733.06701.48184.23874.03254.03251.48151.48153.48383.4838
Si41.74783.02733.02734.23873.06701.48183.48383.48384.03254.03251.48151.4815
H52.60801.48183.06704.23874.51724.51722.41582.41583.13153.13155.11775.1177
H62.60804.23871.48183.06704.51724.51725.11775.11772.41582.41583.13153.1315
H72.60803.06704.23871.48184.51724.51723.13153.13155.11775.11772.41582.4158
H82.67261.48154.03253.48382.41585.11773.13152.39784.13724.78184.13724.7818
H92.67261.48154.03253.48382.41585.11773.13152.39784.78184.13724.78184.1372
H102.67263.48381.48154.03253.13152.41585.11774.13724.78182.39784.13724.7818
H112.67263.48381.48154.03253.13152.41585.11774.78184.13722.39784.78184.1372
H122.67264.03253.48381.48155.11773.13152.41584.13724.78184.13724.78182.3978
H132.67264.03253.48381.48155.11773.13152.41584.78184.13724.78184.13722.3978

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.424 N1 Si2 H8 111.443
N1 Si2 H9 111.443 N1 Si3 H6 107.424
N1 Si3 H10 111.443 N1 Si3 H11 111.443
N1 Si4 H7 107.424 N1 Si4 H12 111.443
N1 Si4 H13 111.443 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.224 H5 Si2 H9 109.224
H6 Si3 H10 109.224 H6 Si3 H11 109.224
H7 Si4 H12 109.224 H7 Si4 H13 109.224
H8 Si2 H9 108.049 H10 Si3 H11 108.049
H12 Si4 H13 108.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.090      
2 Si 0.830      
3 Si 0.830      
4 Si 0.830      
5 H -0.360      
6 H -0.360      
7 H -0.360      
8 H -0.250      
9 H -0.250      
10 H -0.250      
11 H -0.250      
12 H -0.250      
13 H -0.250      


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 -51.933 0.000 0.000
y 0.000 -51.933 0.000
z 0.000 0.000 -52.882
Traceless
 xyz
x 0.474 0.000 0.000
y 0.000 0.474 0.000
z 0.000 0.000 -0.948
Polar
3z2-r2-1.897
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 13.724 0.000 0.000
y 0.000 13.724 0.000
z 0.000 0.000 11.453


<r2> (average value of r2) Å2
<r2> 224.196
(<r2>)1/2 14.973