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

using model chemistry: MP3/6-311+G(3df,2p)

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 MP3/6-311+G(3df,2p)
 hartrees
Energy at 0K-188.799935
Energy at 298.15K-188.801050
HF Energy-188.205690
Nuclear repulsion energy63.706671
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 MP3/6-311+G(3df,2p)
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' 3788 3788 51.61      
2 A' 1969 1969 383.96      
3 A' 1334 1334 0.17      
4 A' 1132 1132 204.80      
5 A' 625 625 36.75      
6 A" 591 591 118.71      

Unscaled Zero Point Vibrational Energy (zpe) 4719.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4719.9 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 MP3/6-311+G(3df,2p)
ABC
4.85527 0.39800 0.36784

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.437 0.000
O2 -1.052 -0.360 0.000
O3 1.146 0.192 0.000
H4 -0.748 -1.277 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32041.17161.8704
O21.32042.26640.9660
O31.17162.26642.3969
H41.87040.96602.3969

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 108.801 O2 C1 O3 130.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP3/6-311+G(3df,2p)
 hartrees
Energy at 0K-188.802872
Energy at 298.15K-188.803967
HF Energy-188.206617
Nuclear repulsion energy63.488480
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 MP3/6-311+G(3df,2p)
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' 3938 3938 143.65      
2 A' 2008 2008 282.81      
3 A' 1291 1291 272.45      
4 A' 1138 1138 62.92      
5 A' 641 641 4.06      
6 A" 550 550 88.00      

Unscaled Zero Point Vibrational Energy (zpe) 4782.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4782.8 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 MP3/6-311+G(3df,2p)
ABC
5.77447 0.38757 0.36320

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.402 0.000
O2 -0.934 -0.547 0.000
O3 1.158 0.261 0.000
H4 -1.794 -0.127 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33131.16681.8707
O21.33132.24290.9575
O31.16682.24292.9781
H41.87070.95752.9781

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 108.534 O2 C1 O3 127.622
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability