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All results from a given calculation for SiH3OH (silanol)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-367.107205
Energy at 298.15K 
HF Energy-367.107205
Nuclear repulsion energy64.430015
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 B3PW91/6-311G*
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' 3906 3761 63.65      
2 A' 2265 2181 106.59      
3 A' 2208 2125 110.49      
4 A' 1022 984 235.46      
5 A' 968 932 118.51      
6 A' 907 873 13.49      
7 A' 822 791 212.79      
8 A' 690 664 89.03      
9 A" 2200 2118 199.41      
10 A" 940 905 92.32      
11 A" 724 697 87.21      
12 A" 223 215 147.37      

Unscaled Zero Point Vibrational Energy (zpe) 8437.9 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 8123.2 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 B3PW91/6-311G*
ABC
2.58905 0.45539 0.44695

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.029 -0.534 0.000
O2 0.029 1.124 0.000
H3 1.454 -0.936 0.000
H4 -0.651 -1.100 1.201
H5 -0.651 -1.100 -1.201
H6 -0.793 1.615 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.65741.48101.49171.49172.3002
O21.65742.50472.61732.61730.9575
H31.48102.50472.42932.42933.3994
H41.49172.61732.42932.40142.9720
H51.49172.61732.42932.40142.9720
H62.30020.95753.39942.97202.9720

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 120.847 O2 Si1 H3 105.759
O2 Si1 H4 112.324 O2 Si1 H5 112.324
H3 Si1 H4 109.609 H3 Si1 H5 109.609
H4 Si1 H5 107.203
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.633      
2 O -0.778      
3 H -0.077      
4 H -0.104      
5 H -0.104      
6 H 0.431      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.558 0.094 0.000 1.561
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.986 -3.376 0.000
y -3.376 -20.113 0.000
z 0.000 0.000 -21.914
Traceless
 xyz
x 1.028 -3.376 0.000
y -3.376 0.837 0.000
z 0.000 0.000 -1.865
Polar
3z2-r2-3.729
x2-y20.128
xy-3.376
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.050 -0.055 0.000
y -0.055 3.799 0.000
z 0.000 0.000 3.823


<r2> (average value of r2) Å2
<r2> 39.398
(<r2>)1/2 6.277