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: PBEPBEultrafine/6-311G*

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/6-311G*
 hartrees
Energy at 0K-366.922495
Energy at 298.15K 
HF Energy-366.922495
Nuclear repulsion energy63.873172
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/6-311G*
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' 3755 3716 46.30 97.56 0.30 0.46
2 A' 2203 2180 100.85 131.21 0.26 0.41
3 A' 2138 2116 104.32 201.28 0.09 0.16
4 A' 991 980 198.43 17.57 0.71 0.83
5 A' 931 922 108.22 22.15 0.75 0.86
6 A' 889 880 32.74 19.30 0.73 0.85
7 A' 799 791 170.75 9.52 0.26 0.41
8 A' 673 666 75.79 9.05 0.71 0.83
9 A" 2133 2111 190.70 90.33 0.75 0.86
10 A" 901 891 76.71 28.66 0.75 0.86
11 A" 696 688 74.69 18.06 0.75 0.86
12 A" 238 236 135.18 2.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8173.3 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 8088.3 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/6-311G*
ABC
2.54314 0.44783 0.43922

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.029 -0.537 0.000
O2 0.029 1.136 0.000
H3 1.469 -0.929 0.000
H4 -0.649 -1.120 1.209
H5 -0.649 -1.120 -1.209
H6 -0.818 1.604 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.67321.49171.50361.50362.3029
O21.67322.51702.64762.64760.9683
H31.49172.51702.44582.44583.4126
H41.50362.64762.44582.41762.9848
H51.50362.64762.44582.41762.9848
H62.30290.96833.41262.98482.9848

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 118.905 O2 Si1 H3 105.224
O2 Si1 H4 112.799 O2 Si1 H5 112.799
H3 Si1 H4 109.485 H3 Si1 H5 109.485
H4 Si1 H5 107.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.540      
2 O -0.723      
3 H -0.058      
4 H -0.087      
5 H -0.087      
6 H 0.415      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.550 0.122 0.000 1.555
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.135 -3.335 0.000
y -3.335 -20.380 0.000
z 0.000 0.000 -22.162
Traceless
 xyz
x 1.137 -3.335 0.000
y -3.335 0.768 0.000
z 0.000 0.000 -1.905
Polar
3z2-r2-3.809
x2-y20.246
xy-3.335
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.267 -0.043 0.000
y -0.043 4.086 0.000
z 0.000 0.000 4.032


<r2> (average value of r2) Å2
<r2> 39.967
(<r2>)1/2 6.322