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All results from a given calculation for SiH3OH (silanol)

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-366.954402
Energy at 298.15K 
HF Energy-366.954402
Nuclear repulsion energy63.864015
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 PBEPBEultrafine/aug-cc-pVTZ
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' 3774 3731 71.77 92.51 0.18 0.31
2 A' 2196 2171 92.75 127.62 0.22 0.35
3 A' 2143 2119 81.78 269.23 0.04 0.08
4 A' 946 935 145.89 1.90 0.74 0.85
5 A' 928 917 82.16 4.68 0.66 0.79
6 A' 888 878 40.09 7.05 0.42 0.60
7 A' 809 800 139.04 9.28 0.20 0.33
8 A' 657 650 55.56 3.08 0.60 0.75
9 A" 2143 2119 153.05 70.65 0.75 0.86
10 A" 909 899 57.45 6.55 0.75 0.86
11 A" 682 675 51.87 5.17 0.75 0.86
12 A" 191 189 88.60 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8132.4 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 8041.3 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
2.51524 0.44846 0.43967

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.031 -0.539 0.000
O2 0.031 1.138 0.000
H3 1.470 -0.931 0.000
H4 -0.653 -1.096 1.215
H5 -0.653 -1.096 -1.215
H6 -0.836 1.569 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.67721.49181.50081.50082.2792
O21.67722.52022.63282.63280.9677
H31.49182.52022.45132.45133.4008
H41.50082.63282.45132.43002.9341
H51.50082.63282.45132.43002.9341
H62.27920.96773.40082.93412.9341

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 116.441 O2 Si1 H3 105.215
O2 Si1 H4 111.759 O2 Si1 H5 111.759
H3 Si1 H4 109.994 H3 Si1 H5 109.994
H4 Si1 H5 108.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.732      
2 O -0.453      
3 H -0.118      
4 H -0.130      
5 H -0.130      
6 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.253 -0.020 0.000 1.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.215 -2.877 0.000
y -2.877 -20.926 0.000
z 0.000 0.000 -22.162
Traceless
 xyz
x 1.329 -2.877 0.000
y -2.877 0.263 0.000
z 0.000 0.000 -1.592
Polar
3z2-r2-3.184
x2-y20.711
xy-2.877
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.289 -0.022 0.000
y -0.022 5.462 0.000
z 0.000 0.000 5.242


<r2> (average value of r2) Å2
<r2> 40.021
(<r2>)1/2 6.326