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: mPW1PW91/cc-pVTZ

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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-114.427787
Energy at 298.15K-114.429206
HF Energy-114.427787
Nuclear repulsion energy30.869206
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 mPW1PW91/cc-pVTZ
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' 3761 3608 74.50      
2 A' 2859 2742 148.13      
3 A' 1514 1452 20.46      
4 A' 1364 1308 75.16      
5 A' 1223 1173 134.90      
6 A" 1103 1058 118.20      

Unscaled Zero Point Vibrational Energy (zpe) 5911.8 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 5670.6 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 mPW1PW91/cc-pVTZ
ABC
9.70475 1.23204 1.09325

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.738 0.000
O2 0.011 -0.566 0.000
H3 -1.078 0.975 0.000
H4 0.926 -0.871 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30391.11471.8512
O21.30391.88710.9648
H31.11471.88712.7251
H41.85120.96482.7251

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.438 O2 C1 H3 102.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.176      
2 O -0.124      
3 H 0.063      
4 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.179 -1.663 0.000 1.673
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.090 -3.662 0.000
y -3.662 -13.608 0.000
z 0.000 0.000 -11.969
Traceless
 xyz
x 1.698 -3.662 0.000
y -3.662 -2.079 0.000
z 0.000 0.000 0.380
Polar
3z2-r20.761
x2-y22.518
xy-3.662
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.816 -0.453 0.000
y -0.453 2.798 0.000
z 0.000 0.000 1.896


<r2> (average value of r2) Å2
<r2> 17.195
(<r2>)1/2 4.147

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-114.420471
Energy at 298.15K-114.421879
HF Energy-114.420471
Nuclear repulsion energy30.793042
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 mPW1PW91/cc-pVTZ
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' 3614 3467 19.08      
2 A' 2773 2660 209.93      
3 A' 1480 1420 50.70      
4 A' 1368 1312 69.35      
5 A' 1233 1183 29.88      
6 A" 1030 988 28.48      

Unscaled Zero Point Vibrational Energy (zpe) 5748.7 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 5514.1 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 mPW1PW91/cc-pVTZ
ABC
9.39589 1.22799 1.08605

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.737 0.000
O2 0.122 -0.563 0.000
H3 -0.949 1.068 0.000
H4 -0.754 -0.983 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30061.12081.9299
O21.30061.95130.9711
H31.12081.95132.0593
H41.92990.97112.0593

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.561 O2 C1 H3 107.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.114      
2 O -0.117      
3 H 0.030      
4 H 0.201      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.923 -1.690 0.000 3.377
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.311 -0.202 0.000
y -0.202 -13.111 0.000
z 0.000 0.000 -11.923
Traceless
 xyz
x 0.207 -0.202 0.000
y -0.202 -0.995 0.000
z 0.000 0.000 0.788
Polar
3z2-r21.575
x2-y20.801
xy-0.202
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.775 0.002 0.000
y 0.002 3.204 0.000
z 0.000 0.000 1.894


<r2> (average value of r2) Å2
<r2> 17.358
(<r2>)1/2 4.166