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

using model chemistry: MP2=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-188.629152
Energy at 298.15K-188.630266
HF Energy-188.145712
Nuclear repulsion energy62.781493
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/cc-pVDZ
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' 3681 3499 43.01      
2 A' 1886 1793 269.32      
3 A' 1322 1257 1.09      
4 A' 1114 1059 175.12      
5 A' 611 581 30.23      
6 A" 611 581 111.77      

Unscaled Zero Point Vibrational Energy (zpe) 4612.6 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 4383.8 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/cc-pVDZ
ABC
4.64109 0.38807 0.35812

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.447 0.000
O2 -1.072 -0.353 0.000
O3 1.164 0.177 0.000
H4 -0.735 -1.272 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33771.19481.8695
O21.33772.29800.9787
O31.19482.29802.3887
H41.86950.97872.3887

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 106.595 O2 C1 O3 130.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-188.631241
Energy at 298.15K-188.632321
HF Energy-188.145368
Nuclear repulsion energy62.511230
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/cc-pVDZ
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' 3838 3648 135.32      
2 A' 1912 1817 180.28      
3 A' 1267 1205 257.30      
4 A' 1123 1067 49.68      
5 A' 617 587 4.65      
6 A" 552 525 90.29      

Unscaled Zero Point Vibrational Energy (zpe) 4654.6 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 4423.8 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/cc-pVDZ
ABC
5.40442 0.37796 0.35325

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.412 0.000
O2 -0.954 -0.544 0.000
O3 1.179 0.245 0.000
H4 -1.801 -0.074 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.35051.19081.8658
O21.35052.27400.9695
O31.19082.27402.9974
H41.86580.96952.9974

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 105.895 O2 C1 O3 126.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability