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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-928.199161
Energy at 298.15K 
HF Energy-928.199161
Nuclear repulsion energy289.150457
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 PBEPBEultrafine/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' 2156 2132 0.00 931.59 0.00 0.00
2 A' 2152 2128 0.00 88.45 0.62 0.76
3 A' 971 960 0.00 2.44 0.71 0.83
4 A' 917 907 0.00 5.31 0.75 0.86
5 A' 620 613 0.00 0.63 0.23 0.38
6 A' 471 465 0.00 22.67 0.05 0.09
7 A" 2151 2127 335.21 0.00 0.75 0.86
8 A" 900 890 130.78 0.00 0.75 0.86
9 A" 700 692 89.17 0.00 0.75 0.86
10 A" 151 150 0.38 0.00 0.75 0.86
11 A" 74 74 0.22 0.00 0.75 0.86
12 E' 2162 2138 184.43 71.79 0.75 0.86
12 E' 2162 2138 184.48 71.94 0.75 0.86
13 E' 2142 2118 82.44 5.55 0.75 0.86
13 E' 2142 2118 82.45 5.60 0.75 0.86
14 E' 970 959 104.76 1.94 0.75 0.86
14 E' 970 959 104.75 1.92 0.75 0.86
15 E' 926 916 181.04 6.51 0.75 0.86
15 E' 926 916 181.06 6.48 0.75 0.86
16 E' 899 889 445.64 7.37 0.75 0.86
16 E' 899 889 445.71 7.31 0.75 0.86
17 E' 663 655 1.01 5.53 0.75 0.86
17 E' 663 655 1.01 5.54 0.75 0.86
18 E' 158 156 0.53 0.21 0.75 0.86
18 E' 158 156 0.53 0.21 0.75 0.86
19 E" 2149 2125 0.00 138.51 0.75 0.86
19 E" 2149 2125 0.00 138.27 0.75 0.86
20 E" 900 890 0.00 10.67 0.75 0.86
20 E" 900 890 0.00 10.58 0.75 0.86
21 E" 661 653 0.00 4.45 0.75 0.86
21 E" 661 653 0.00 4.41 0.75 0.86
22 E" 74 73 0.00 0.16 0.75 0.86
22 E" 74 73 0.00 0.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17334.6 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 17140.5 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
0.10133 0.10133 0.05353

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/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 1.757 0.000
Si3 -1.521 -0.878 0.000
Si4 1.521 -0.878 0.000
H5 -1.431 2.202 0.000
H6 -1.192 -2.341 0.000
H7 2.623 0.138 0.000
H8 0.687 2.306 1.213
H9 0.687 2.306 -1.213
H10 -2.341 -0.558 1.213
H11 -2.341 -0.558 -1.213
H12 1.654 -1.749 1.213
H13 1.654 -1.749 -1.213

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75681.75681.75682.62642.62642.62642.69532.69532.69532.69532.69532.6953
Si21.75683.04293.04291.49904.26723.08191.49901.49903.50873.50874.06144.0614
Si31.75683.04293.04293.08191.49904.26724.06144.06141.49901.49903.50873.5087
Si41.75683.04293.04294.26723.08191.49903.50873.50874.06144.06141.49901.4990
H52.62641.49903.08194.26724.54914.54912.44382.44383.14933.14935.15735.1573
H62.62644.26721.49903.08194.54914.54915.15735.15732.44382.44383.14933.1493
H72.62643.08194.26721.49904.54914.54913.14933.14935.15735.15732.44382.4438
H82.69531.49904.06143.50872.44385.15733.14932.42694.16844.82354.16844.8235
H92.69531.49904.06143.50872.44385.15733.14932.42694.82354.16844.82354.1684
H102.69533.50871.49904.06143.14932.44385.15734.16844.82352.42694.16844.8235
H112.69533.50871.49904.06143.14932.44385.15734.82354.16842.42694.82354.1684
H122.69534.06143.50871.49905.15733.14932.44384.16844.82354.16844.82352.4269
H132.69534.06143.50871.49905.15733.14932.44384.82354.16844.82354.16842.4269

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.285 N1 Si2 H8 111.507
N1 Si2 H9 111.507 N1 Si3 H6 107.285
N1 Si3 H10 111.507 N1 Si3 H11 111.507
N1 Si4 H7 107.285 N1 Si4 H12 111.507
N1 Si4 H13 111.507 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.206 H5 Si2 H9 109.206
H6 Si3 H10 109.206 H6 Si3 H11 109.206
H7 Si4 H12 109.206 H7 Si4 H13 109.206
H8 Si2 H9 108.093 H10 Si3 H11 108.093
H12 Si4 H13 108.093
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.096      
2 Si 0.593      
3 Si 0.593      
4 Si 0.593      
5 H -0.236      
6 H -0.236      
7 H -0.236      
8 H -0.162      
9 H -0.162      
10 H -0.162      
11 H -0.162      
12 H -0.162      
13 H -0.162      


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 -51.741 0.000 0.000
y 0.000 -51.741 0.000
z 0.000 0.000 -52.752
Traceless
 xyz
x 0.505 0.000 0.000
y 0.000 0.505 0.000
z 0.000 0.000 -1.011
Polar
3z2-r2-2.022
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 14.922 -0.000 0.000
y -0.000 14.923 0.000
z 0.000 0.000 12.304


<r2> (average value of r2) Å2
<r2> 226.438
(<r2>)1/2 15.048