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All results from a given calculation for SiH3OH (silanol)

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-364.975751
Energy at 298.15K 
HF Energy-364.975751
Nuclear repulsion energy63.063301
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/3-21G
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' 3654 3520 35.54 128.09 0.30 0.47
2 A' 2247 2165 115.63 107.11 0.24 0.39
3 A' 2175 2095 126.57 164.16 0.09 0.16
4 A' 1046 1008 172.02 17.46 0.67 0.80
5 A' 954 919 100.08 15.51 0.73 0.84
6 A' 923 889 61.20 40.82 0.75 0.86
7 A' 792 763 151.47 8.65 0.10 0.18
8 A' 724 698 97.13 7.25 0.73 0.85
9 A" 2167 2087 215.95 68.65 0.75 0.86
10 A" 892 860 76.30 39.31 0.75 0.86
11 A" 730 704 96.17 14.10 0.75 0.86
12 A" 281 271 154.94 4.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8292.6 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 7988.2 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/3-21G
ABC
2.55473 0.43305 0.42549

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.029 -0.547 0.000
O2 0.029 1.155 0.000
H3 1.466 -0.945 0.000
H4 -0.636 -1.146 1.210
H5 -0.636 -1.146 -1.210
H6 -0.823 1.647 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.70171.49101.50561.50562.3534
O21.70172.54432.68382.68380.9836
H31.49102.54432.43392.43393.4577
H41.50562.68382.43392.42103.0502
H51.50562.68382.43392.42103.0502
H62.35340.98363.45773.05023.0502

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 120.034 O2 Si1 H3 105.483
O2 Si1 H4 113.464 O2 Si1 H5 113.464
H3 Si1 H4 108.623 H3 Si1 H5 108.623
H4 Si1 H5 107.025
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.764      
2 O -0.707      
3 H -0.127      
4 H -0.156      
5 H -0.156      
6 H 0.380      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.702 0.040 0.000 1.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.345 -3.457 0.000
y -3.457 -20.638 0.000
z 0.000 0.000 -22.232
Traceless
 xyz
x 1.090 -3.457 0.000
y -3.457 0.651 0.000
z 0.000 0.000 -1.741
Polar
3z2-r2-3.482
x2-y20.292
xy-3.457
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.510 -0.190 0.000
y -0.190 3.735 0.000
z 0.000 0.000 3.184


<r2> (average value of r2) Å2
<r2> 40.834
(<r2>)1/2 6.390