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

using model chemistry: HSEh1PBE/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/cc-pVDZ
 hartrees
Energy at 0K-928.272575
Energy at 298.15K 
HF Energy-928.272575
Nuclear repulsion energy287.625697
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/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' 2208 2124 0.00 691.75 0.00 0.01
2 A' 2202 2118 0.00 89.76 0.67 0.80
3 A' 1003 965 0.00 11.89 0.73 0.85
4 A' 944 908 0.00 9.89 0.74 0.85
5 A' 640 616 0.00 1.06 0.16 0.27
6 A' 476 458 0.00 16.87 0.08 0.14
7 A" 2202 2119 356.62 0.00 0.75 0.86
8 A" 927 892 153.96 0.00 0.75 0.86
9 A" 719 692 103.83 0.00 0.75 0.86
10 A" 152 146 1.05 0.00 0.75 0.86
11 A" 63 61 0.05 0.00 0.75 0.86
12 E' 2211 2127 199.50 72.88 0.75 0.86
12 E' 2211 2127 199.55 72.87 0.75 0.86
13 E' 2194 2110 84.81 1.64 0.75 0.86
13 E' 2194 2110 84.82 1.64 0.75 0.86
14 E' 989 952 75.21 2.38 0.75 0.86
14 E' 989 952 75.21 2.38 0.75 0.86
15 E' 954 917 212.40 8.30 0.75 0.86
15 E' 954 917 212.41 8.30 0.75 0.86
16 E' 924 889 515.79 20.68 0.75 0.86
16 E' 924 889 515.81 20.68 0.75 0.86
17 E' 675 649 2.34 13.40 0.75 0.86
17 E' 675 649 2.34 13.39 0.75 0.86
18 E' 168 162 0.65 0.15 0.75 0.86
18 E' 168 162 0.65 0.15 0.75 0.86
19 E" 2200 2116 0.00 127.94 0.75 0.86
19 E" 2200 2116 0.00 127.93 0.75 0.86
20 E" 924 889 0.00 25.99 0.75 0.86
20 E" 924 889 0.00 26.00 0.75 0.86
21 E" 679 653 0.00 14.80 0.75 0.86
21 E" 679 653 0.00 14.79 0.75 0.86
22 E" 68 66 0.00 0.50 0.75 0.86
22 E" 68 66 0.00 0.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17753.6 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 17077.2 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/cc-pVDZ
ABC
0.10014 0.10014 0.05288

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 1.769 0.000
Si3 -1.532 -0.884 0.000
Si4 1.532 -0.884 0.000
H5 -1.433 2.210 0.000
H6 -1.197 -2.346 0.000
H7 2.631 0.136 0.000
H8 0.687 2.317 1.216
H9 0.687 2.317 -1.216
H10 -2.350 -0.564 1.216
H11 -2.350 -0.564 -1.216
H12 1.663 -1.753 1.216
H13 1.663 -1.753 -1.216

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.76861.76861.76862.63432.63432.63432.70502.70502.70502.70502.70502.7050
Si21.76863.06333.06331.49994.28573.09601.49991.49993.52693.52694.08004.0800
Si31.76863.06333.06333.09601.49994.28574.08004.08001.49991.49993.52693.5269
Si41.76863.06333.06334.28573.09601.49993.52693.52694.08004.08001.49991.4999
H52.63431.49993.09604.28574.56284.56282.44632.44633.16413.16415.17445.1744
H62.63434.28571.49993.09604.56284.56285.17445.17442.44632.44633.16413.1641
H72.63433.09604.28571.49994.56284.56283.16413.16415.17445.17442.44632.4463
H82.70501.49994.08003.52692.44635.17443.16412.43114.18554.84034.18554.8403
H92.70501.49994.08003.52692.44635.17443.16412.43114.84034.18554.84034.1855
H102.70503.52691.49994.08003.16412.44635.17444.18554.84032.43114.18554.8403
H112.70503.52691.49994.08003.16412.44635.17444.84034.18552.43114.84034.1855
H122.70504.08003.52691.49995.17443.16412.44634.18554.84034.18554.84032.4311
H132.70504.08003.52691.49995.17443.16412.44634.84034.18554.84034.18552.4311

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.122 N1 Si2 H8 111.441
N1 Si2 H9 111.441 N1 Si3 H6 107.122
N1 Si3 H10 111.441 N1 Si3 H11 111.441
N1 Si4 H7 107.122 N1 Si4 H12 111.441
N1 Si4 H13 111.441 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.265 H5 Si2 H9 109.265
H6 Si3 H10 109.265 H6 Si3 H11 109.265
H7 Si4 H12 109.265 H7 Si4 H13 109.265
H8 Si2 H9 108.271 H10 Si3 H11 108.271
H12 Si4 H13 108.271
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.597      
2 Si 0.346      
3 Si 0.346      
4 Si 0.346      
5 H -0.050      
6 H -0.050      
7 H -0.050      
8 H -0.049      
9 H -0.049      
10 H -0.049      
11 H -0.049      
12 H -0.049      
13 H -0.049      


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 -51.001 0.000 0.000
y 0.000 -51.001 0.000
z 0.000 0.000 -52.336
Traceless
 xyz
x 0.667 0.000 0.000
y 0.000 0.667 0.000
z 0.000 0.000 -1.335
Polar
3z2-r2-2.670
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 12.608 -0.000 0.000
y -0.000 12.608 0.000
z 0.000 0.000 10.573


<r2> (average value of r2) Å2
<r2> 228.224
(<r2>)1/2 15.107