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All results from a given calculation for SiH3OH (silanol)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-362.732869
Energy at 298.15K 
HF Energy-362.732869
Nuclear repulsion energy63.262100
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 TPSSh/STO-3G
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' 3673 3673 50.56 48.11 0.31 0.47
2 A' 2728 2728 21.08 39.48 0.57 0.73
3 A' 2627 2627 27.31 68.99 0.06 0.11
4 A' 1283 1283 15.23 10.49 0.69 0.82
5 A' 1144 1144 115.37 20.35 0.75 0.86
6 A' 1103 1103 207.80 10.84 0.75 0.85
7 A' 842 842 4.64 6.04 0.31 0.48
8 A' 720 720 68.28 3.68 0.70 0.83
9 A" 2665 2665 52.82 42.59 0.75 0.86
10 A" 1106 1106 66.68 19.69 0.75 0.86
11 A" 726 726 63.66 8.35 0.75 0.86
12 A" 295 295 55.21 8.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9456.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9456.6 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 TPSSh/STO-3G
ABC
2.59119 0.43581 0.42469

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.036 -0.549 0.000
O2 0.036 1.178 0.000
H3 1.423 -0.940 0.000
H4 -0.621 -1.102 1.167
H5 -0.621 -1.102 -1.167
H6 -0.968 1.400 0.000

Atom - Atom Distances (Å)
  Si1 O2 H3 H4 H5 H6
Si11.72711.44071.44951.44952.1926
O21.72712.53152.64512.64511.0285
H31.44072.53152.35952.35953.3454
H41.44952.64512.35952.33452.7832
H51.44952.64512.35952.33452.7832
H62.19261.02853.34542.78322.7832

picture of silanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 O2 H6 102.463 O2 Si1 H3 105.735
O2 Si1 H4 112.453 O2 Si1 H5 112.453
H3 Si1 H4 109.446 H3 Si1 H5 109.446
H4 Si1 H5 107.274
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.636      
2 O -0.359      
3 H -0.133      
4 H -0.142      
5 H -0.142      
6 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.083 -0.423 0.000 1.163
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.962 -0.242 0.000
y -0.242 2.211 0.000
z 0.000 0.000 1.443


<r2> (average value of r2) Å2
<r2> 38.888
(<r2>)1/2 6.236