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

using model chemistry: QCISD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-188.699531
Energy at 298.15K-188.700635
HF Energy-188.181829
Nuclear repulsion energy63.156669
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/6-311G**
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' 3738 3567 26.96      
2 A' 1884 1797 284.69      
3 A' 1344 1283 1.96      
4 A' 1106 1055 181.82      
5 A' 615 587 35.91      
6 A" 589 562 118.94      

Unscaled Zero Point Vibrational Energy (zpe) 4637.9 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 4425.0 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 QCISD/6-311G**
ABC
4.66617 0.39296 0.36244

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.447 0.000
O2 -1.064 -0.357 0.000
O3 1.155 0.181 0.000
H4 -0.732 -1.269 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33351.18541.8651
O21.33352.28300.9699
O31.18542.28302.3790
H41.86510.96992.3790

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 107.074 O2 C1 O3 129.914
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-188.701586
Energy at 298.15K-188.702652
HF Energy-188.181838
Nuclear repulsion energy62.859447
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/6-311G**
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' 3900 3721 110.57      
2 A' 1923 1835 204.62      
3 A' 1289 1230 248.25      
4 A' 1099 1049 70.49      
5 A' 626 597 5.92      
6 A" 527 503 92.31      

Unscaled Zero Point Vibrational Energy (zpe) 4682.4 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 4467.4 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/6-311G**
ABC
5.53124 0.38099 0.35644

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.409 0.000
O2 -0.946 -0.551 0.000
O3 1.170 0.256 0.000
H4 -1.796 -0.103 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34741.17991.8672
O21.34742.26420.9608
O31.17992.26422.9873
H41.86720.96082.9873

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 106.785 O2 C1 O3 127.112
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability