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

using model chemistry: MP2=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 MP2=FULL/6-31G
 hartrees
Energy at 0K-188.358185
Energy at 298.15K-188.359253
HF Energy-188.023599
Nuclear repulsion energy61.213419
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/6-31G
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' 3482 3309 19.82      
2 A' 1815 1724 723.57      
3 A' 1299 1235 6.00      
4 A' 1015 965 151.87      
5 A' 577 548 34.36      
6 A" 604 574 205.08      

Unscaled Zero Point Vibrational Energy (zpe) 4396.3 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 4176.9 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/6-31G
ABC
4.55972 0.36566 0.33851

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.453 0.000
O2 -1.088 -0.382 0.000
O3 1.195 0.210 0.000
H4 -0.857 -1.345 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.37131.21971.9922
O21.37132.35890.9911
O31.21972.35892.5753
H41.99220.99112.5753

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 114.004 O2 C1 O3 131.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-188.362610
Energy at 298.15K-188.363655
HF Energy-188.024459
Nuclear repulsion energy61.037844
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/6-31G
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' 3663 3481 86.73      
2 A' 1877 1783 614.96      
3 A' 1215 1154 232.72      
4 A' 1014 963 115.33      
5 A' 581 552 7.64      
6 A" 572 544 140.45      

Unscaled Zero Point Vibrational Energy (zpe) 4461.1 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 4238.5 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/6-31G
ABC
5.24939 0.35874 0.33579

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.428 0.000
O2 -0.970 -0.568 0.000
O3 1.204 0.269 0.000
H4 -1.869 -0.177 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.38981.21411.9645
O21.38982.32900.9801
O31.21412.32903.1049
H41.96450.98013.1049

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 110.786 O2 C1 O3 126.743
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability