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

using model chemistry: QCISD/daug-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 QCISD/daug-cc-pVDZ
 hartrees
Energy at 0K-188.679211
Energy at 298.15K-188.680287
HF Energy-188.161386
Nuclear repulsion energy62.597059
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/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3662 3662 32.32      
2 A' 1829 1829 306.95      
3 A' 1315 1315 1.23      
4 A' 1061 1061 188.17      
5 A' 595 595 30.35      
6 A" 569 569 107.08      

Unscaled Zero Point Vibrational Energy (zpe) 4515.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4515.1 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/daug-cc-pVDZ
ABC
4.63222 0.38507 0.35552

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.449 0.000
O2 -1.072 -0.363 0.000
O3 1.166 0.187 0.000
H4 -0.751 -1.285 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34471.19531.8893
O21.34472.30530.9766
O31.19532.30532.4174
H41.88930.97662.4174

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 107.905 O2 C1 O3 130.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD/daug-cc-pVDZ
 hartrees
Energy at 0K-188.681928
Energy at 298.15K 
HF Energy-188.162128
Nuclear repulsion energy62.364861
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/daug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD/daug-cc-pVDZ
ABC
5.44182 0.37516 0.35096

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.414 0.000
O2 -0.952 -0.554 0.000
O3 1.179 0.257 0.000
H4 -1.815 -0.114 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.35761.18971.8904
O21.35762.28070.9681
O31.18972.28073.0174
H41.89040.96813.0174

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 107.564 O2 C1 O3 126.983
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability