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

using model chemistry: QCISD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-188.612966
Energy at 298.15K-188.614049
HF Energy-188.123386
Nuclear repulsion energy62.500132
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)/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' 3547 3403        
2 A' 1858 1782        
3 A' 1328 1274        
4 A' 1088 1044        
5 A' 593 569        
6 A" 599 574        

Unscaled Zero Point Vibrational Energy (zpe) 4506.0 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 4322.6 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)/6-31G*
ABC
4.52989 0.38591 0.35562

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

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-188.614430
Energy at 298.15K-188.615477
HF Energy-188.122678
Nuclear repulsion energy62.212158
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)/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' 3724 3572        
2 A' 1894 1817        
3 A' 1277 1225        
4 A' 1084 1040        
5 A' 604 580        
6 A" 538 516        

Unscaled Zero Point Vibrational Energy (zpe) 4560.2 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 4374.6 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)/6-31G*
ABC
5.30168 0.37518 0.35038

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

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability