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: MP3/daug-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 MP3/daug-cc-pVDZ
 hartrees
Energy at 0K-188.665018
Energy at 298.15K-188.666119
HF Energy-188.162958
Nuclear repulsion energy62.985986
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 MP3/daug-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' 3734 3734 46.61      
2 A' 1925 1925 372.71      
3 A' 1331 1331 0.72      
4 A' 1098 1098 203.33      
5 A' 613 613 32.35      
6 A" 582 582 113.54      

Unscaled Zero Point Vibrational Energy (zpe) 4641.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4641.3 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 MP3/daug-cc-pVDZ
ABC
4.74510 0.38884 0.35939

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.443 0.000
O2 -1.065 -0.367 0.000
O3 1.158 0.195 0.000
H4 -0.747 -1.286 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33791.18471.8836
O21.33792.29340.9726
O31.18472.29342.4138
H41.88360.97262.4138

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 108.185 O2 C1 O3 130.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP3/daug-cc-pVDZ
 hartrees
Energy at 0K-188.667919
Energy at 298.15K-188.668997
HF Energy-188.163739
Nuclear repulsion energy62.771543
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 MP3/daug-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' 3872 3872 129.00      
2 A' 1962 1962 271.08      
3 A' 1289 1289 249.85      
4 A' 1097 1097 82.24      
5 A' 623 623 3.96      
6 A" 542 542 84.94      

Unscaled Zero Point Vibrational Energy (zpe) 4691.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4691.8 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 MP3/daug-cc-pVDZ
ABC
5.58011 0.37930 0.35516

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.409 0.000
O2 -0.945 -0.554 0.000
O3 1.171 0.263 0.000
H4 -1.807 -0.122 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34921.17991.8838
O21.34922.26790.9646
O31.17992.26793.0030
H41.88380.96463.0030

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 107.856 O2 C1 O3 127.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability