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All results from a given calculation for SiH3OH (silanol)

using model chemistry: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-365.286432
Energy at 298.15K 
HF Energy-365.286432
Nuclear repulsion energy64.341559
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 B3LYP/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' 3626 3488 39.97 124.08 0.32 0.48
2 A' 2312 2224 116.57 94.39 0.22 0.37
3 A' 2250 2165 123.68 126.75 0.10 0.18
4 A' 1083 1042 245.14 13.33 0.63 0.77
5 A' 969 932 104.58 20.65 0.74 0.85
6 A' 946 910 1.68 16.03 0.63 0.77
7 A' 796 766 132.38 8.82 0.33 0.49
8 A' 705 678 179.17 5.12 0.70 0.82
9 A" 2240 2155 212.42 55.54 0.75 0.86
10 A" 936 900 94.73 23.73 0.75 0.86
11 A" 762 733 87.84 10.22 0.75 0.86
12 A" 276 265 147.65 4.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8450.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 8129.0 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 B3LYP/3-21G*
ABC
2.61319 0.45449 0.44638

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.028 -0.532 0.000
O2 0.028 1.121 0.000
H3 1.452 -0.937 0.000
H4 -0.638 -1.123 1.197
H5 -0.638 -1.123 -1.197
H6 -0.795 1.661 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.65241.48011.49231.49232.3418
O21.65242.50242.62892.62890.9843
H31.48012.50242.41572.41573.4347
H41.49232.62892.41572.39423.0342
H51.49232.62892.41572.39423.0342
H62.34180.98433.43473.03423.0342

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 123.278 O2 Si1 H3 105.910
O2 Si1 H4 113.340 O2 Si1 H5 113.340
H3 Si1 H4 108.722 H3 Si1 H5 108.722
H4 Si1 H5 106.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.548      
2 O -0.608      
3 H -0.089      
4 H -0.112      
5 H -0.112      
6 H 0.372      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.614 0.581 0.000 1.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.056 -3.279 0.000
y -3.279 -19.500 0.000
z 0.000 0.000 -21.743
Traceless
 xyz
x 0.566 -3.279 0.000
y -3.279 1.399 0.000
z 0.000 0.000 -1.966
Polar
3z2-r2-3.931
x2-y2-0.555
xy-3.279
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.374 -0.230 0.000
y -0.230 3.553 0.000
z 0.000 0.000 3.045


<r2> (average value of r2) Å2
<r2> 39.364
(<r2>)1/2 6.274