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

using model chemistry: CCD/aug-cc-pVTZ

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 CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-188.813190
Energy at 298.15K-188.814295
HF Energy-188.209197
Nuclear repulsion energy63.429485
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 CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3732 3572 49.64      
2 A' 1933 1850 365.26      
3 A' 1333 1276 0.06      
4 A' 1117 1069 204.78      
5 A' 621 594 34.37      
6 A" 580 555 114.38      

Unscaled Zero Point Vibrational Energy (zpe) 4657.5 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 4457.2 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 CCD/aug-cc-pVTZ
ABC
4.81516 0.39449 0.36462

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.439 0.000
O2 -1.057 -0.362 0.000
O3 1.151 0.193 0.000
H4 -0.747 -1.280 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32651.17691.8749
O21.32652.27670.9694
O31.17692.27672.4027
H41.87490.96942.4027

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 108.494 O2 C1 O3 130.771
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-188.816106
Energy at 298.15K-188.817188
HF Energy-188.210104
Nuclear repulsion energy63.204399
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 CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3876 3709 136.56      
2 A' 1972 1887 267.86      
3 A' 1283 1228 257.46      
4 A' 1118 1070 74.25      
5 A' 633 606 4.32      
6 A" 539 515 85.65      

Unscaled Zero Point Vibrational Energy (zpe) 4709.9 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 4507.4 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 CCD/aug-cc-pVTZ
ABC
5.70083 0.38426 0.36000

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.404 0.000
O2 -0.938 -0.550 0.000
O3 1.163 0.262 0.000
H4 -1.799 -0.123 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33811.17191.8748
O21.33812.25290.9611
O31.17192.25292.9874
H41.87480.96112.9874

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 108.134 O2 C1 O3 127.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability