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

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-188.623528
Energy at 298.15K-188.624616
HF Energy-188.137437
Nuclear repulsion energy62.658682
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/6-31+G**
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' 3706 3480 51.53      
2 A' 1867 1753 346.08      
3 A' 1291 1213 1.16      
4 A' 1096 1029 204.56      
5 A' 598 562 35.00      
6 A" 593 557 135.53      

Unscaled Zero Point Vibrational Energy (zpe) 4574.6 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 4296.5 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/6-31+G**
ABC
4.64945 0.38597 0.35638

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.446 0.000
O2 -1.072 -0.354 0.000
O3 1.168 0.179 0.000
H4 -0.768 -1.282 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33771.19811.8914
O21.33772.30230.9768
O31.19812.30232.4254
H41.89140.97682.4254

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 108.612 O2 C1 O3 130.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-188.626655
Energy at 298.15K-188.627722
HF Energy-188.137536
Nuclear repulsion energy62.435495
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/6-31+G**
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' 3851 3617 145.86      
2 A' 1896 1781 233.21      
3 A' 1244 1169 266.52      
4 A' 1109 1042 64.90      
5 A' 607 570 5.12      
6 A" 554 520 107.15      

Unscaled Zero Point Vibrational Energy (zpe) 4630.5 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 4349.0 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 MP2=FULL/6-31+G**
ABC
5.45123 0.37655 0.35222

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.413 0.000
O2 -0.954 -0.542 0.000
O3 1.182 0.245 0.000
H4 -1.817 -0.101 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34971.19351.8886
O21.34972.27610.9686
O31.19352.27613.0187
H41.88860.96863.0187

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 107.974 O2 C1 O3 126.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability