return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HOCH (hydroxycarbene)

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 yes CS trans 1A'
1 2 no CS cis 1A'

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-114.100164
Energy at 298.15K-114.101577
HF Energy-113.781325
Nuclear repulsion energy30.357688
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' 3638 3490        
2 A' 2836 2720        
3 A' 1535 1472        
4 A' 1321 1267        
5 A' 1225 1175        
6 A" 1101 1057        

Unscaled Zero Point Vibrational Energy (zpe) 5827.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 5590.7 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
9.34399 1.19145 1.05671

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.753 0.000
O2 0.010 -0.577 0.000
H3 -1.091 0.970 0.000
H4 0.945 -0.870 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33051.12311.8726
O21.33051.90000.9792
H31.12311.90002.7446
H41.87260.97922.7446

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.358 O2 C1 H3 101.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-114.091782
Energy at 298.15K-114.093182
HF Energy-113.772441
Nuclear repulsion energy30.303758
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' 3487 3345        
2 A' 2728 2617        
3 A' 1491 1430        
4 A' 1330 1276        
5 A' 1251 1200        
6 A" 1013 971        

Unscaled Zero Point Vibrational Energy (zpe) 5649.7 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 5419.8 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)/6-31G*
ABC
9.12933 1.18798 1.05119

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.752 0.000
O2 0.123 -0.573 0.000
H3 -0.962 1.070 0.000
H4 -0.766 -0.997 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32451.13091.9617
O21.32451.96890.9856
H31.13091.96892.0757
H41.96170.98562.0757

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.462 O2 C1 H3 106.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability