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All results from a given calculation for SiH3OH (silanol)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-366.076196
Energy at 298.15K 
HF Energy-366.076196
Nuclear repulsion energy63.682239
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 HF/SDD
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' 4215 3795 138.20 97.00 0.31 0.48
2 A' 2347 2114 113.79 136.45 0.15 0.26
3 A' 2294 2066 134.05 158.11 0.12 0.21
4 A' 1071 964 310.11 30.55 0.73 0.84
5 A' 1048 944 198.25 31.77 0.75 0.86
6 A' 914 823 35.97 6.66 0.70 0.82
7 A' 782 704 132.99 16.98 0.51 0.68
8 A' 661 595 234.77 6.73 0.30 0.46
9 A" 2277 2050 220.97 62.56 0.75 0.86
10 A" 1033 930 136.77 35.94 0.75 0.86
11 A" 764 688 123.58 17.74 0.75 0.86
12 A" 176 158 274.01 3.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8790.7 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 7915.1 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 HF/SDD
ABC
2.67196 0.43621 0.43093

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.025 -0.553 0.000
O2 0.025 1.136 0.000
H3 1.436 -0.975 0.000
H4 -0.667 -1.077 1.203
H5 -0.667 -1.077 -1.203
H6 -0.654 1.792 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.68901.47291.48351.48352.4420
O21.68902.53902.61192.61190.9446
H31.47292.53902.42542.42543.4681
H41.48352.61192.42542.40623.1114
H51.48352.61192.42542.40623.1114
H62.44200.94463.46813.11143.1114

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 134.054 O2 Si1 H3 106.639
O2 Si1 H4 110.665 O2 Si1 H5 110.665
H3 Si1 H4 110.246 H3 Si1 H5 110.246
H4 Si1 H5 108.384
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.178      
2 O -1.031      
3 H -0.178      
4 H -0.203      
5 H -0.203      
6 H 0.438      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.648 -0.526 0.000 1.730
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.260 -3.705 0.000
y -3.705 -20.153 0.000
z 0.000 0.000 -22.668
Traceless
 xyz
x 0.150 -3.705 0.000
y -3.705 1.811 0.000
z 0.000 0.000 -1.961
Polar
3z2-r2-3.923
x2-y2-1.108
xy-3.705
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.382 -0.110 0.000
y -0.110 3.205 0.000
z 0.000 0.000 3.178


<r2> (average value of r2) Å2
<r2> 40.718
(<r2>)1/2 6.381