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

using model chemistry: HSEh1PBE/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at HSEh1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-928.280734
Energy at 298.15K 
HF Energy-928.280734
Nuclear repulsion energy287.930387
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 HSEh1PBE/aug-cc-pVDZ
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' 2210 2127 0.00 910.72 0.00 0.00
2 A' 2203 2120 0.00 80.78 0.64 0.78
3 A' 994 956 0.00 2.11 0.74 0.85
4 A' 941 906 0.00 5.70 0.75 0.86
5 A' 644 620 0.00 0.38 0.22 0.36
6 A' 476 458 0.00 21.08 0.05 0.09
7 A" 2205 2122 350.21 0.00 0.75 0.86
8 A" 926 891 141.53 0.00 0.75 0.86
9 A" 716 689 100.45 0.00 0.75 0.86
10 A" 156 150 0.94 0.00 0.75 0.86
11 A" 80 77 0.01 0.00 0.75 0.86
12 E' 2213 2129 202.26 67.83 0.75 0.86
12 E' 2213 2129 202.30 67.79 0.75 0.86
13 E' 2198 2115 74.96 3.90 0.75 0.86
13 E' 2198 2115 74.95 3.90 0.75 0.86
14 E' 988 950 75.12 1.67 0.75 0.86
14 E' 988 950 75.12 1.68 0.75 0.86
15 E' 949 913 163.41 7.86 0.75 0.86
15 E' 949 913 163.41 7.85 0.75 0.86
16 E' 920 885 533.82 6.14 0.75 0.86
16 E' 920 885 533.83 6.16 0.75 0.86
17 E' 678 652 2.26 5.35 0.75 0.86
17 E' 678 652 2.26 5.35 0.75 0.86
18 E' 167 160 0.52 0.20 0.75 0.86
18 E' 167 160 0.52 0.20 0.75 0.86
19 E" 2202 2119 0.00 128.97 0.75 0.86
19 E" 2202 2119 0.00 129.14 0.75 0.86
20 E" 928 893 0.00 11.64 0.75 0.86
20 E" 928 893 0.00 11.64 0.75 0.86
21 E" 678 652 0.00 4.20 0.75 0.86
21 E" 678 652 0.00 4.18 0.75 0.86
22 E" 83 79 0.00 0.11 0.75 0.86
22 E" 83 79 0.00 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17777.4 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 17105.4 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 HSEh1PBE/aug-cc-pVDZ
ABC
0.10035 0.10035 0.05299

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVDZ

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.767 0.000
Si3 -1.530 -0.884 0.000
Si4 1.530 -0.884 0.000
H5 -1.432 2.209 0.000
H6 -1.198 -2.344 0.000
H7 2.629 0.135 0.000
H8 0.690 2.309 1.215
H9 0.690 2.309 -1.215
H10 -2.344 -0.557 1.215
H11 -2.344 -0.557 -1.215
H12 1.655 -1.752 1.215
H13 1.655 -1.752 -1.215

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.76711.76711.76712.63262.63262.63262.69832.69832.69832.69832.69832.6983
Si21.76713.06073.06071.49834.28233.09451.49811.49813.51743.51744.07354.0735
Si31.76713.06073.06073.09451.49834.28234.07354.07351.49811.49813.51743.5174
Si41.76713.06073.06074.28233.09451.49833.51743.51744.07354.07351.49811.4981
H52.63261.49833.09454.28234.55984.55982.44632.44633.15623.15625.16605.1660
H62.63264.28231.49833.09454.55984.55985.16605.16602.44632.44633.15623.1562
H72.63263.09454.28231.49834.55984.55983.15623.15625.16605.16602.44632.4463
H82.69831.49814.07353.51742.44635.16603.15622.42934.17334.82884.17334.8288
H92.69831.49814.07353.51742.44635.16603.15622.42934.82884.17334.82884.1733
H102.69833.51741.49814.07353.15622.44635.16604.17334.82882.42934.17334.8288
H112.69833.51741.49814.07353.15622.44635.16604.82884.17332.42934.82884.1733
H122.69834.07353.51741.49815.16603.15622.44634.17334.82884.17334.82882.4293
H132.69834.07353.51741.49815.16603.15622.44634.82884.17334.82884.17332.4293

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.170 N1 Si2 H8 111.193
N1 Si2 H9 111.193 N1 Si3 H6 107.170
N1 Si3 H10 111.193 N1 Si3 H11 111.193
N1 Si4 H7 107.170 N1 Si4 H12 111.193
N1 Si4 H13 111.193 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.459 H5 Si2 H9 109.459
H6 Si3 H10 109.459 H6 Si3 H11 109.459
H7 Si4 H12 109.459 H7 Si4 H13 109.459
H8 Si2 H9 108.345 H10 Si3 H11 108.345
H12 Si4 H13 108.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.320      
2 Si -0.912      
3 Si -0.912      
4 Si -0.912      
5 H 0.300      
6 H 0.300      
7 H 0.300      
8 H 0.359      
9 H 0.359      
10 H 0.359      
11 H 0.359      
12 H 0.359      
13 H 0.359      


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 -51.497 0.000 0.000
y 0.000 -51.497 0.000
z 0.000 0.000 -52.789
Traceless
 xyz
x 0.646 0.000 0.000
y 0.000 0.646 0.000
z 0.000 0.000 -1.292
Polar
3z2-r2-2.584
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 14.415 -0.000 0.000
y -0.000 14.415 0.000
z 0.000 0.000 11.966


<r2> (average value of r2) Å2
<r2> 228.056
(<r2>)1/2 15.102