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All results from a given calculation for HOCO (Hydrocarboxyl radical)

using model chemistry: MP2=FULL/aug-cc-pVQZ

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 MP2=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-188.959856
Energy at 298.15K-188.960956
HF Energy-188.221326
Nuclear repulsion energy63.349937
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 MP2=FULL/aug-cc-pVQZ
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' 3681 3521 53.39      
2 A' 1878 1796 322.38      
3 A' 1302 1245 0.48      
4 A' 1095 1047 193.12      
5 A' 609 582 32.17      
6 A" 593 568 107.48      

Unscaled Zero Point Vibrational Energy (zpe) 4578.9 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 4379.3 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 MP2=FULL/aug-cc-pVQZ
ABC
4.79562 0.39388 0.36398

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.439 0.000
O2 -1.060 -0.354 0.000
O3 1.154 0.184 0.000
H4 -0.753 -1.275 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32401.18211.8721
O21.32402.27900.9712
O31.18212.27902.4012
H41.87210.97122.4012

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 108.329 O2 C1 O3 130.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-188.963056
Energy at 298.15K-188.964139
HF Energy-188.222153
Nuclear repulsion energy63.134438
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 MP2=FULL/aug-cc-pVQZ
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' 3834 3667 151.74      
2 A' 1911 1828 229.59      
3 A' 1249 1195 250.09      
4 A' 1117 1068 68.47      
5 A' 623 596 4.67      
6 A" 556 532 87.11      

Unscaled Zero Point Vibrational Energy (zpe) 4645.7 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 4443.1 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 MP2=FULL/aug-cc-pVQZ
ABC
5.62802 0.38441 0.35983

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.406 0.000
O2 -0.942 -0.541 0.000
O3 1.167 0.250 0.000
H4 -1.799 -0.103 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33571.17761.8697
O21.33572.25280.9624
O31.17762.25282.9873
H41.86970.96242.9873

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 107.793 O2 C1 O3 127.257
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability