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

using model chemistry: CCSD/6-311G*

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 CCSD/6-311G*
 hartrees
Energy at 0K-188.682724
Energy at 298.15K-188.683841
HF Energy-188.174919
Nuclear repulsion energy63.244684
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 CCSD/6-311G*
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' 3676 3505 13.88      
2 A' 1918 1829 315.50      
3 A' 1344 1282 3.25      
4 A' 1123 1071 194.30      
5 A' 617 588 39.09      
6 A" 612 583 142.88      

Unscaled Zero Point Vibrational Energy (zpe) 4645.0 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 4429.1 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 CCSD/6-311G*
ABC
4.70590 0.39362 0.36324

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.445 0.000
O2 -1.060 -0.359 0.000
O3 1.154 0.185 0.000
H4 -0.754 -1.280 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32981.18261.8825
O21.32982.27930.9710
O31.18262.27932.4055
H41.88250.97102.4055

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 108.806 O2 C1 O3 130.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD/6-311G*
 hartrees
Energy at 0K-188.684671
Energy at 298.15K-188.685753
HF Energy-188.174815
Nuclear repulsion energy62.967146
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 CCSD/6-311G*
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' 3854 3675 86.60      
2 A' 1958 1867 212.88      
3 A' 1304 1243 281.57      
4 A' 1104 1053 65.11      
5 A' 630 601 5.78      
6 A" 550 525 112.38      

Unscaled Zero Point Vibrational Energy (zpe) 4699.8 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 4481.3 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 CCSD/6-311G*
ABC
5.61348 0.38179 0.35747

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.409 0.000
O2 -0.942 -0.551 0.000
O3 1.167 0.261 0.000
H4 -1.806 -0.131 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34451.17661.8848
O21.34452.25980.9612
O31.17662.25982.9989
H41.88480.96122.9989

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 108.516 O2 C1 O3 127.235
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability