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All results from a given calculation for SiH3OH (silanol)

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-366.956460
Energy at 298.15K 
HF Energy-366.956460
Nuclear repulsion energy64.166900
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 PBEPBE/Def2TZVPP
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' 3797 3751 73.40 86.43 0.23 0.38
2 A' 2193 2166 93.39 120.19 0.23 0.38
3 A' 2142 2116 83.38 216.86 0.06 0.12
4 A' 960 948 159.85 4.32 0.74 0.85
5 A' 933 921 82.37 9.35 0.74 0.85
6 A' 888 877 23.92 9.72 0.60 0.75
7 A' 814 804 151.95 7.97 0.24 0.39
8 A' 661 653 59.43 4.30 0.69 0.82
9 A" 2140 2115 158.61 69.75 0.75 0.86
10 A" 912 901 60.69 12.42 0.75 0.86
11 A" 690 681 55.28 9.31 0.75 0.86
12 A" 185 183 94.30 1.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8156.2 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 8057.5 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 PBEPBE/Def2TZVPP
ABC
2.53084 0.45349 0.44458

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.030 -0.535 0.000
O2 0.030 1.130 0.000
H3 1.466 -0.932 0.000
H4 -0.652 -1.095 1.211
H5 -0.652 -1.095 -1.211
H6 -0.830 1.569 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.66531.48981.49871.49872.2737
O21.66532.51322.62392.62390.9664
H31.48982.51322.44522.44523.3961
H41.49872.62392.44522.42272.9324
H51.49872.62392.44522.42272.9324
H62.27370.96643.39612.93242.9324

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 117.029 O2 Si1 H3 105.464
O2 Si1 H4 111.942 O2 Si1 H5 111.942
H3 Si1 H4 109.811 H3 Si1 H5 109.811
H4 Si1 H5 107.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.388      
2 O -0.367      
3 H -0.059      
4 H -0.076      
5 H -0.076      
6 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.277 0.133 0.000 1.284
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.111 -2.887 0.000
y -2.887 -20.537 0.000
z 0.000 0.000 -22.038
Traceless
 xyz
x 1.176 -2.887 0.000
y -2.887 0.537 0.000
z 0.000 0.000 -1.713
Polar
3z2-r2-3.427
x2-y20.426
xy-2.887
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.831 -0.045 0.000
y -0.045 4.827 0.000
z 0.000 0.000 4.696


<r2> (average value of r2) Å2
<r2> 39.654
(<r2>)1/2 6.297