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 HOCO (Hydrocarboxyl radical)

using model chemistry: PBEPBE/aug-cc-pVDZ

19 10 17 12 22

States and conformations

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

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-188.934309
Energy at 298.15K-188.935363
HF Energy-188.934309
Nuclear repulsion energy62.500373
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 PBEPBE/aug-cc-pVDZ
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' 3409 3388 5.61      
2 A' 1797 1786 299.44      
3 A' 1251 1244 1.80      
4 A' 1026 1020 121.58      
5 A' 565 561 24.32      
6 A" 582 579 90.02      

Unscaled Zero Point Vibrational Energy (zpe) 4315.5 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 4289.1 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 PBEPBE/aug-cc-pVDZ
ABC
4.66724 0.38382 0.35465

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.443 0.000
O2 -1.075 -0.352 0.000
O3 1.171 0.181 0.000
H4 -0.771 -1.295 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33701.20051.9018
O21.33702.30870.9916
O31.20052.30872.4394
H41.90180.99162.4394

picture of Hydrocarboxyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.606 O2 C1 O3 130.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.332      
2 O -0.195      
3 O -0.232      
4 H 0.095      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.004 -1.654 0.000 1.935
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.263 0.837 0.000
y 0.837 -14.522 0.000
z 0.000 0.000 -16.669
Traceless
 xyz
x -4.668 0.837 0.000
y 0.837 3.944 0.000
z 0.000 0.000 0.724
Polar
3z2-r21.448
x2-y2-5.741
xy0.837
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.278 0.284 -0.000
y 0.284 3.899 -0.000
z -0.000 -0.000 2.546


<r2> (average value of r2) Å2
<r2> 35.638
(<r2>)1/2 5.970

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-188.937462
Energy at 298.15K-188.938509
HF Energy-188.937462
Nuclear repulsion energy62.262168
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 PBEPBE/aug-cc-pVDZ
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' 3665 3643 97.57      
2 A' 1827 1816 216.02      
3 A' 1200 1193 218.20      
4 A' 1050 1044 57.17      
5 A' 589 585 4.35      
6 A" 549 546 80.80      

Unscaled Zero Point Vibrational Energy (zpe) 4439.9 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 4412.8 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 PBEPBE/aug-cc-pVDZ
ABC
5.33101 0.37580 0.35105

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.417 0.000
O2 -0.955 -0.544 0.000
O3 1.183 0.243 0.000
H4 -1.824 -0.094 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.35461.19581.8943
O21.35462.27810.9781
O31.19582.27813.0258
H41.89430.97813.0258

picture of Hydrocarboxyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.494 O2 C1 O3 126.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.286      
2 O -0.257      
3 O -0.242      
4 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.868 0.229 0.000 2.877
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.258 -0.870 0.000
y -0.870 -18.365 0.000
z 0.000 0.000 -16.722
Traceless
 xyz
x 3.286 -0.870 0.000
y -0.870 -2.875 0.000
z 0.000 0.000 -0.411
Polar
3z2-r2-0.822
x2-y24.107
xy-0.870
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.741 0.168 0.000
y 0.168 3.242 0.000
z 0.000 0.000 2.583


<r2> (average value of r2) Å2
<r2> 35.981
(<r2>)1/2 5.998