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

using model chemistry: MP3/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 MP3/cc-pVTZ
 hartrees
Energy at 0K-188.799076
Energy at 298.15K-188.800194
HF Energy-188.206429
Nuclear repulsion energy63.578065
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/cc-pVTZ
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' 3776 3567 49.59      
2 A' 1969 1860 352.08      
3 A' 1346 1272 0.07      
4 A' 1131 1069 197.16      
5 A' 627 593 34.94      
6 A" 591 559 116.30      

Unscaled Zero Point Vibrational Energy (zpe) 4720.4 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 4459.3 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/cc-pVTZ
ABC
4.81289 0.39672 0.36651

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.440 0.000
O2 -1.055 -0.361 0.000
O3 1.147 0.191 0.000
H4 -0.740 -1.275 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32451.17401.8674
O21.32452.27070.9667
O31.17402.27072.3897
H41.86740.96672.3897

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 108.162 O2 C1 O3 130.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP3/cc-pVTZ
 hartrees
Energy at 0K-188.801717
Energy at 298.15K-188.802810
HF Energy-188.207000
Nuclear repulsion energy63.336366
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/cc-pVTZ
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' 3923 3706 136.75      
2 A' 2006 1895 251.99      
3 A' 1296 1224 262.43      
4 A' 1138 1075 67.34      
5 A' 642 606 3.89      
6 A" 544 514 86.81      

Unscaled Zero Point Vibrational Energy (zpe) 4774.1 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 4510.0 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 MP3/cc-pVTZ
ABC
5.70471 0.38601 0.36155

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.404 0.000
O2 -0.937 -0.549 0.000
O3 1.161 0.261 0.000
H4 -1.793 -0.119 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33611.16941.8676
O21.33612.24810.9582
O31.16942.24812.9779
H41.86760.95822.9779

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 107.847 O2 C1 O3 127.482
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability