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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-188.361994
Energy at 298.15K-188.362986
HF Energy-188.022410
Nuclear repulsion energy60.989101
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 QCISD/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' 3475 3349 12.90      
2 A' 1670 1609 185.18      
3 A' 1299 1252 5.09      
4 A' 964 929 217.24      
5 A' 563 542 43.24      
6 A" 519 500 195.49      

Unscaled Zero Point Vibrational Energy (zpe) 4244.8 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 4090.3 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 QCISD/6-31G
ABC
4.40401 0.36485 0.33694

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
O2 -1.092 -0.380 0.000
O3 1.198 0.201 0.000
H4 -0.849 -1.340 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.37921.22621.9923
O21.37922.36250.9898
O31.22622.36252.5623
H41.99230.98982.5623

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 113.466 O2 C1 O3 130.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-188.365307
Energy at 298.15K-188.366283
HF Energy-188.023580
Nuclear repulsion energy60.803477
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 QCISD/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' 3658 3525 74.23      
2 A' 1733 1670 99.95      
3 A' 1208 1164 210.30      
4 A' 966 931 127.30      
5 A' 583 562 11.24      
6 A" 488 471 149.97      

Unscaled Zero Point Vibrational Energy (zpe) 4318.1 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 4160.9 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 QCISD/6-31G
ABC
5.17610 0.35608 0.33316

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.433 0.000
O2 -0.973 -0.573 0.000
O3 1.207 0.272 0.000
H4 -1.875 -0.192 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.39861.21751.9760
O21.39862.33730.9791
O31.21752.33733.1163
H41.97600.97913.1163

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 111.192 O2 C1 O3 126.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability