return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiH3OH (silanol)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-367.078253
Energy at 298.15K 
HF Energy-367.078253
Nuclear repulsion energy64.158928
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 B3PW91/6-31+G**
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' 3932 3776 90.34      
2 A' 2284 2193 123.70      
3 A' 2229 2140 113.34      
4 A' 994 954 221.63      
5 A' 968 930 110.25      
6 A' 886 851 19.86      
7 A' 827 794 193.09      
8 A' 670 643 74.07      
9 A" 2226 2137 210.47      
10 A" 949 912 73.19      
11 A" 713 685 72.34      
12 A" 205 197 133.72      

Unscaled Zero Point Vibrational Energy (zpe) 8442.5 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 8105.7 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 B3PW91/6-31+G**
ABC
2.56039 0.45145 0.44283

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.030 -0.538 0.000
O2 0.030 1.132 0.000
H3 1.455 -0.941 0.000
H4 -0.655 -1.084 1.205
H5 -0.655 -1.084 -1.205
H6 -0.815 1.589 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.67041.48061.49041.49042.2893
O21.67042.51542.61452.61450.9610
H31.48062.51542.43472.43473.3992
H41.49042.61452.43472.41082.9370
H51.49042.61452.43472.41082.9370
H62.28930.96103.39922.93702.9370

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 118.401 O2 Si1 H3 105.771
O2 Si1 H4 111.489 O2 Si1 H5 111.489
H3 Si1 H4 110.069 H3 Si1 H5 110.069
H4 Si1 H5 107.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.607      
2 O -0.651      
3 H -0.095      
4 H -0.113      
5 H -0.113      
6 H 0.364      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.488 -0.214 0.000 1.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.955 -3.292 0.000
y -3.292 -20.581 0.000
z 0.000 0.000 -21.993
Traceless
 xyz
x 1.332 -3.292 0.000
y -3.292 0.393 0.000
z 0.000 0.000 -1.725
Polar
3z2-r2-3.449
x2-y20.626
xy-3.292
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.168 0.015 0.000
y 0.015 4.176 0.000
z 0.000 0.000 4.102


<r2> (average value of r2) Å2
<r2> 39.658
(<r2>)1/2 6.297