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: MP4=FULL/cc-pVTZ

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 MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-114.278631
Energy at 298.15K-114.280048
HF Energy-113.835182
Nuclear repulsion energy30.697918
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 MP4=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' 3759 3620        
2 A' 2888 2781        
3 A' 1517 1461        
4 A' 1325 1276        
5 A' 1211 1166        
6 A" 1115 1073        

Unscaled Zero Point Vibrational Energy (zpe) 5907.6 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 5688.5 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 MP4=FULL/cc-pVTZ
ABC
9.64355 1.21493 1.07899

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.744 0.000
O2 0.010 -0.573 0.000
H3 -1.072 0.974 0.000
H4 0.934 -0.855 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31681.10661.8464
O21.31681.88830.9660
H31.10661.88832.7149
H41.84640.96602.7149

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 106.961 O2 C1 H3 102.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-114.271059
Energy at 298.15K-114.272468
HF Energy-113.827295
Nuclear repulsion energy30.637182
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 MP4=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' 3658 3522        
2 A' 2799 2695        
3 A' 1488 1433        
4 A' 1337 1287        
5 A' 1230 1184        
6 A" 1043 1004        

Unscaled Zero Point Vibrational Energy (zpe) 5777.0 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 5562.6 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 MP4=FULL/cc-pVTZ
ABC
9.32163 1.21285 1.07321

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.743 0.000
O2 0.122 -0.570 0.000
H3 -0.945 1.060 0.000
H4 -0.767 -0.959 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31361.11351.9209
O21.31361.94860.9704
H31.11351.94862.0272
H41.92090.97042.0272

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 113.647 O2 C1 H3 106.513
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability