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

using model chemistry: B2PLYP=FULL/6-31G**

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 B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-188.933137
Energy at 298.15K-188.934232
HF Energy-188.772692
Nuclear repulsion energy62.864669
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 B2PLYP=FULL/6-31G**
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' 3661 3661 23.39      
2 A' 1868 1868 261.73      
3 A' 1313 1313 0.10      
4 A' 1096 1096 171.38      
5 A' 596 596 36.25      
6 A" 607 607 124.84      

Unscaled Zero Point Vibrational Energy (zpe) 4570.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4570.1 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 B2PLYP=FULL/6-31G**
ABC
4.60500 0.38999 0.35954

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.449 0.000
O2 -1.068 -0.349 0.000
O3 1.163 0.172 0.000
H4 -0.760 -1.276 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33321.19531.8850
O21.33322.29090.9766
O31.19532.29092.4073
H41.88500.97662.4073

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 108.399 O2 C1 O3 129.847
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-188.934928
Energy at 298.15K-188.935992
HF Energy-188.773767
Nuclear repulsion energy62.574316
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 B2PLYP=FULL/6-31G**
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' 3844 3844 106.32      
2 A' 1903 1903 174.65      
3 A' 1251 1251 267.65      
4 A' 1105 1105 53.25      
5 A' 613 613 4.69      
6 A" 547 547 97.92      

Unscaled Zero Point Vibrational Energy (zpe) 4631.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4631.0 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 B2PLYP=FULL/6-31G**
ABC
5.38560 0.37928 0.35433

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.416 0.000
O2 -0.951 -0.541 0.000
O3 1.177 0.242 0.000
H4 -1.812 -0.101 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34901.19031.8841
O21.34902.26770.9667
O31.19032.26773.0089
H41.88410.96673.0089

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 107.761 O2 C1 O3 126.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability