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All results from a given calculation for SiH3OH (silanol)

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-366.952705
Energy at 298.15K 
HF Energy-366.952705
Nuclear repulsion energy64.127207
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/6-311+G(3df,2p)
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' 3803 3803 75.93 85.14 0.21 0.35
2 A' 2199 2199 91.86 123.13 0.22 0.36
3 A' 2147 2147 83.43 233.77 0.06 0.11
4 A' 953 953 155.19 2.16 0.75 0.86
5 A' 932 932 79.95 6.86 0.73 0.84
6 A' 885 885 28.76 7.35 0.47 0.64
7 A' 807 807 149.42 8.98 0.20 0.33
8 A' 659 659 58.16 3.73 0.67 0.80
9 A" 2146 2146 153.72 70.89 0.75 0.86
10 A" 913 913 58.03 8.50 0.75 0.86
11 A" 684 684 51.90 6.77 0.75 0.86
12 A" 188 188 92.26 0.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8158.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8158.6 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/6-311+G(3df,2p)
ABC
2.53023 0.45267 0.44386

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.030 -0.536 0.000
O2 0.030 1.131 0.000
H3 1.466 -0.929 0.000
H4 -0.651 -1.093 1.212
H5 -0.651 -1.093 -1.212
H6 -0.830 1.572 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.66751.48881.49781.49782.2772
O21.66752.51122.62292.62290.9663
H31.48882.51122.44552.44553.3952
H41.49782.62292.44552.42422.9333
H51.49782.62292.44552.42422.9333
H62.27720.96633.39522.93332.9333

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 117.164 O2 Si1 H3 105.287
O2 Si1 H4 111.810 O2 Si1 H5 111.810
H3 Si1 H4 109.937 H3 Si1 H5 109.937
H4 Si1 H5 108.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.509      
2 O -0.501      
3 H -0.070      
4 H -0.074      
5 H -0.074      
6 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.277 0.056 0.000 1.278
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.145 -2.911 0.000
y -2.911 -20.753 0.000
z 0.000 0.000 -22.144
Traceless
 xyz
x 1.304 -2.911 0.000
y -2.911 0.391 0.000
z 0.000 0.000 -1.695
Polar
3z2-r2-3.390
x2-y20.608
xy-2.911
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.042 -0.007 0.000
y -0.007 5.196 0.000
z 0.000 0.000 5.023


<r2> (average value of r2) Å2
<r2> 39.757
(<r2>)1/2 6.305