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

using model chemistry: CCSD=FULL/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 CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-188.847199
Energy at 298.15K-188.848311
HF Energy-188.206183
Nuclear repulsion energy63.503082
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 CCSD=FULL/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' 3737 3543 37.76      
2 A' 1929 1829 318.42      
3 A' 1339 1270 0.03      
4 A' 1117 1059 187.43      
5 A' 619 587 34.67      
6 A" 592 561 112.14      

Unscaled Zero Point Vibrational Energy (zpe) 4666.4 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 4424.2 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 CCSD=FULL/cc-pVTZ
ABC
4.80873 0.39581 0.36571

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.439 0.000
O2 -1.057 -0.357 0.000
O3 1.150 0.187 0.000
H4 -0.744 -1.273 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.32351.17751.8673
O21.32352.27350.9682
O31.17752.27352.3921
H41.86730.96822.3921

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 108.131 O2 C1 O3 130.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-188.849433
Energy at 298.15K-188.850521
HF Energy-188.206752
Nuclear repulsion energy63.241378
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 CCSD=FULL/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' 3894 3692 129.21      
2 A' 1969 1866 232.64      
3 A' 1284 1217 255.02      
4 A' 1122 1064 66.81      
5 A' 637 604 5.02      
6 A" 543 515 86.09      

Unscaled Zero Point Vibrational Energy (zpe) 4724.6 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 4479.4 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 CCSD=FULL/cc-pVTZ
ABC
5.70962 0.38466 0.36038

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.403 0.000
O2 -0.939 -0.548 0.000
O3 1.163 0.260 0.000
H4 -1.795 -0.114 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33651.17231.8681
O21.33652.25230.9594
O31.17232.25232.9820
H41.86810.95942.9820

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 107.779 O2 C1 O3 127.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability