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All results from a given calculation for SiH3OH (silanol)

using model chemistry: PBE1PBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-366.931963
Energy at 298.15K 
HF Energy-366.931963
Nuclear repulsion energy63.646978
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 PBE1PBE/cc-pVDZ
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' 3891 3741 83.64 80.88 0.28 0.43
2 A' 2251 2164 99.87 113.91 0.27 0.43
3 A' 2198 2113 84.90 197.71 0.08 0.14
4 A' 992 954 172.88 10.12 0.71 0.83
5 A' 948 912 98.56 15.20 0.75 0.86
6 A' 914 879 62.05 13.88 0.75 0.85
7 A' 836 804 111.92 8.23 0.25 0.40
8 A' 683 657 62.74 7.20 0.71 0.83
9 A" 2196 2112 169.92 72.90 0.75 0.86
10 A" 925 890 70.44 21.09 0.75 0.86
11 A" 708 681 67.63 13.75 0.75 0.86
12 A" 223 215 105.49 2.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8383.2 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 8060.4 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 PBE1PBE/cc-pVDZ
ABC
2.50945 0.44437 0.43554

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.031 -0.542 0.000
O2 0.031 1.146 0.000
H3 1.470 -0.934 0.000
H4 -0.653 -1.101 1.215
H5 -0.653 -1.101 -1.215
H6 -0.844 1.550 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.68801.49211.50171.50172.2675
O21.68802.52972.64412.64410.9636
H31.49212.52972.45172.45173.3952
H41.50172.64412.45172.42942.9222
H51.50172.64412.45172.42942.9222
H62.26750.96363.39522.92222.9222

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 114.785 O2 Si1 H3 105.236
O2 Si1 H4 111.852 O2 Si1 H5 111.852
H3 Si1 H4 109.959 H3 Si1 H5 109.959
H4 Si1 H5 107.974
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.412      
2 O -0.372      
3 H -0.056      
4 H -0.078      
5 H -0.078      
6 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.361 -0.064 0.000 1.363
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.746 -2.901 0.000
y -2.901 -20.419 0.000
z 0.000 0.000 -21.705
Traceless
 xyz
x 1.317 -2.901 0.000
y -2.901 0.306 0.000
z 0.000 0.000 -1.623
Polar
3z2-r2-3.246
x2-y20.674
xy-2.901
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.224 -0.089 0.000
y -0.089 4.064 0.000
z 0.000 0.000 4.015


<r2> (average value of r2) Å2
<r2> 39.898
(<r2>)1/2 6.316