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

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-188.835275
Energy at 298.15K-188.836365
HF Energy-188.204318
Nuclear repulsion energy62.979899
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(T)/cc-pVTZ
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' 3656 3468        
2 A' 1848 1753        
3 A' 1319 1251        
4 A' 1075 1020        
5 A' 602 571        
6 A" 583 553        

Unscaled Zero Point Vibrational Energy (zpe) 4542.2 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 4308.8 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(T)/cc-pVTZ
ABC
4.66720 0.39038 0.36025

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-188.837861
Energy at 298.15K-188.838921
HF Energy-188.204739
Nuclear repulsion energy62.709485
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(T)/cc-pVTZ
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' 3827 3631        
2 A' 1886 1789        
3 A' 1260 1195        
4 A' 1082 1027        
5 A' 616 584        
6 A" 530 503        

Unscaled Zero Point Vibrational Energy (zpe) 4600.8 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 4364.4 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(T)/cc-pVTZ
ABC
5.47145 0.37976 0.35511

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability