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: BLYP/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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-189.105012
Energy at 298.15K-189.106048
HF Energy-189.105012
Nuclear repulsion energy62.249974
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 BLYP/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' 3372 3365 5.08      
2 A' 1756 1753 291.00      
3 A' 1247 1245 2.91      
4 A' 991 989 127.33      
5 A' 561 560 22.81      
6 A" 569 568 90.92      

Unscaled Zero Point Vibrational Energy (zpe) 4247.8 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 4239.8 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 BLYP/aug-cc-pVDZ
ABC
4.60425 0.38094 0.35183

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.448 0.000
O2 -1.077 -0.359 0.000
O3 1.174 0.187 0.000
H4 -0.775 -1.305 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34601.20291.9167
O21.34602.31670.9934
O31.20292.31672.4545
H41.91670.99342.4545

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 109.103 O2 C1 O3 130.633
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.299      
2 O -0.157      
3 O -0.207      
4 H 0.064      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.966 -1.626 0.000 1.891
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.487 0.794 0.000
y 0.794 -14.594 0.000
z 0.000 0.000 -16.746
Traceless
 xyz
x -4.816 0.794 0.000
y 0.794 4.022 0.000
z 0.000 0.000 0.794
Polar
3z2-r21.588
x2-y2-5.893
xy0.794
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.317 0.305 -0.000
y 0.305 3.926 -0.000
z -0.000 -0.000 2.564


<r2> (average value of r2) Å2
<r2> 35.922
(<r2>)1/2 5.994

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-189.108517
Energy at 298.15K-189.109545
HF Energy-189.108517
Nuclear repulsion energy61.981006
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 BLYP/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' 3629 3622 92.60      
2 A' 1789 1786 202.81      
3 A' 1196 1194 201.05      
4 A' 1003 1001 81.49      
5 A' 583 581 4.65      
6 A" 539 538 81.07      

Unscaled Zero Point Vibrational Energy (zpe) 4368.9 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 4360.6 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 BLYP/aug-cc-pVDZ
ABC
5.23236 0.37271 0.34793

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.423 0.000
O2 -0.956 -0.553 0.000
O3 1.185 0.250 0.000
H4 -1.832 -0.114 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.36641.19791.9095
O21.36642.28690.9797
O31.19792.28693.0394
H41.90950.97973.0394

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 107.822 O2 C1 O3 126.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.249      
2 O -0.206      
3 O -0.213      
4 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.839 0.254 0.000 2.850
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.443 -0.871 0.000
y -0.871 -18.466 0.000
z 0.000 0.000 -16.800
Traceless
 xyz
x 3.189 -0.871 0.000
y -0.871 -2.844 0.000
z 0.000 0.000 -0.345
Polar
3z2-r2-0.691
x2-y24.022
xy-0.871
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.797 0.207 -0.000
y 0.207 3.255 0.000
z -0.000 0.000 2.597


<r2> (average value of r2) Å2
<r2> 36.290
(<r2>)1/2 6.024