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

using model chemistry: CID/3-21G*

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 CID/3-21G*
 hartrees
Energy at 0K-187.357722
Energy at 298.15K-187.358784
HF Energy-187.065504
Nuclear repulsion energy61.952401
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 CID/3-21G*
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' 3505 3261 12.10      
2 A' 1874 1744 281.14      
3 A' 1358 1264 6.56      
4 A' 1037 965 186.19      
5 A' 607 564 46.12      
6 A" 554 516 183.74      

Unscaled Zero Point Vibrational Energy (zpe) 4467.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 4157.0 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 CID/3-21G*
ABC
4.66621 0.37485 0.34697

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.447 0.000
O2 -1.075 -0.384 0.000
O3 1.177 0.217 0.000
H4 -0.817 -1.343 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.35851.19941.9676
O21.35852.33070.9935
O31.19942.33072.5316
H41.96760.99352.5316

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 112.640 O2 C1 O3 131.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-187.359650
Energy at 298.15K-187.360664
HF Energy-187.065643
Nuclear repulsion energy61.679769
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 CID/3-21G*
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' 3667 3412 73.91      
2 A' 1924 1790 164.45      
3 A' 1250 1163 213.71      
4 A' 1032 960 118.93      
5 A' 620 577 8.05      
6 A" 488 454 130.97      

Unscaled Zero Point Vibrational Energy (zpe) 4489.9 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 4177.9 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 CID/3-21G*
ABC
5.49352 0.36479 0.34207

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.417 0.000
O2 -0.955 -0.578 0.000
O3 1.187 0.288 0.000
H4 -1.854 -0.181 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.37881.19341.9478
O21.37882.31010.9828
O31.19342.31013.0764
H41.94780.98283.0764

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 109.993 O2 C1 O3 127.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability