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 HOCH (hydroxycarbene)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
1 2 no CS cis 1A'

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-114.377959
Energy at 298.15K-114.379375
HF Energy-114.377959
Nuclear repulsion energy30.735450
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 B3PW91/6-31G(2df,p)
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' 3727 3584 56.35      
2 A' 2815 2707 147.86      
3 A' 1518 1459 19.72      
4 A' 1355 1302 58.00      
5 A' 1217 1170 126.92      
6 A" 1102 1060 107.05      

Unscaled Zero Point Vibrational Energy (zpe) 5867.0 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5640.6 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 B3PW91/6-31G(2df,p)
ABC
9.50214 1.22449 1.08471

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.742 0.000
O2 0.011 -0.568 0.000
H3 -1.090 0.966 0.000
H4 0.932 -0.868 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30991.12431.8546
O21.30991.88870.9681
H31.12431.88872.7301
H41.85460.96812.7301

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.062 O2 C1 H3 101.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.223      
2 O -0.243      
3 H 0.123      
4 H 0.343      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.328 -1.670 0.000 1.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.738 -3.369 0.000
y -3.369 -13.369 0.000
z 0.000 0.000 -11.681
Traceless
 xyz
x 1.787 -3.369 0.000
y -3.369 -2.160 0.000
z 0.000 0.000 0.373
Polar
3z2-r20.745
x2-y22.632
xy-3.369
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.539 -0.567 0.000
y -0.567 2.522 0.000
z 0.000 0.000 1.612


<r2> (average value of r2) Å2
<r2> 17.080
(<r2>)1/2 4.133

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-114.371102
Energy at 298.15K-114.372507
HF Energy-114.371102
Nuclear repulsion energy30.692017
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 B3PW91/6-31G(2df,p)
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' 3569 3431 18.22      
2 A' 2739 2633 207.74      
3 A' 1482 1424 47.41      
4 A' 1366 1313 55.12      
5 A' 1222 1175 29.91      
6 A" 1028 988 32.25      

Unscaled Zero Point Vibrational Energy (zpe) 5702.5 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5482.4 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 B3PW91/6-31G(2df,p)
ABC
9.28823 1.22158 1.07959

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.740 0.000
O2 0.122 -0.564 0.000
H3 -0.959 1.065 0.000
H4 -0.754 -0.991 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30411.12881.9398
O21.30411.95540.9747
H31.12881.95542.0661
H41.93980.97472.0661

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.950 O2 C1 H3 106.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.180      
2 O -0.242      
3 H 0.097      
4 H 0.325      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.744 -1.728 0.000 3.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.917 -0.029 0.000
y -0.029 -12.835 0.000
z 0.000 0.000 -11.666
Traceless
 xyz
x 0.334 -0.029 0.000
y -0.029 -1.044 0.000
z 0.000 0.000 0.710
Polar
3z2-r21.420
x2-y20.918
xy-0.029
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.412 -0.069 0.000
y -0.069 2.926 0.000
z 0.000 0.000 1.626


<r2> (average value of r2) Å2
<r2> 17.226
(<r2>)1/2 4.150