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: MP2=FULL/aug-cc-pVQZ

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 MP2=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-114.317889
Energy at 298.15K-114.319310
HF Energy-113.845560
Nuclear repulsion energy30.901114
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 MP2=FULL/aug-cc-pVQZ
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' 3768 3603 110.77      
2 A' 2967 2838 107.83      
3 A' 1517 1451 17.18      
4 A' 1362 1302 83.47      
5 A' 1218 1164 143.31      
6 A" 1123 1074 113.72      

Unscaled Zero Point Vibrational Energy (zpe) 5976.5 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 5715.9 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 MP2=FULL/aug-cc-pVQZ
ABC
9.79690 1.23219 1.09452

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.737 0.000
O2 0.010 -0.567 0.000
H3 -1.067 0.977 0.000
H4 0.928 -0.862 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30471.10301.8446
O21.30471.88270.9644
H31.10301.88272.7135
H41.84460.96442.7135

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.815 O2 C1 H3 102.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-114.309684
Energy at 298.15K-114.311096
HF Energy-113.837216
Nuclear repulsion energy30.806240
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 MP2=FULL/aug-cc-pVQZ
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' 3662 3502 27.58      
2 A' 2878 2753 162.79      
3 A' 1488 1423 43.39      
4 A' 1363 1304 81.78      
5 A' 1238 1184 47.31      
6 A" 1049 1003 25.68      

Unscaled Zero Point Vibrational Energy (zpe) 5839.5 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 5584.9 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 MP2=FULL/aug-cc-pVQZ
ABC
9.43858 1.22718 1.08598

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.738 0.000
O2 0.122 -0.566 0.000
H3 -0.940 1.062 0.000
H4 -0.761 -0.966 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30371.10971.9192
O21.30371.94270.9692
H31.10971.94272.0355
H41.91920.96922.0355

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.412 O2 C1 H3 106.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability