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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-22.521072
Energy at 298.15K-22.522488
HF Energy-22.243765
Nuclear repulsion energy17.606745
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/CEP-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' 3729 3540 78.22      
2 A' 2994 2843 150.90      
3 A' 1542 1464 42.34      
4 A' 1331 1263 95.80      
5 A' 1227 1164 129.61      
6 A" 1127 1070 136.72      

Unscaled Zero Point Vibrational Energy (zpe) 5974.2 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 5671.9 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/CEP-31G*
ABC
9.30812 1.18073 1.04781

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.757 0.000
O2 0.010 -0.581 0.000
H3 -1.090 0.972 0.000
H4 0.949 -0.866 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33791.12051.8750
O21.33791.90300.9815
H31.12051.90302.7451
H41.87500.98152.7451

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 106.875 O2 C1 H3 101.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-22.510059
Energy at 298.15K-22.511463
HF Energy-22.232910
Nuclear repulsion energy17.551359
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/CEP-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' 3599 3417 9.29      
2 A' 2896 2749 233.41      
3 A' 1504 1428 56.97      
4 A' 1330 1263 95.08      
5 A' 1244 1181 40.83      
6 A" 1036 983 37.28      

Unscaled Zero Point Vibrational Energy (zpe) 5804.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 5510.3 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/CEP-31G*
ABC
9.06743 1.17427 1.03963

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.124 0.757 0.000
O2 0.124 -0.577 0.000
H3 -0.962 1.067 0.000
H4 -0.773 -0.990 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33471.12881.9643
O21.33471.97040.9875
H31.12881.97042.0660
H41.96430.98752.0660

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.717 O2 C1 H3 105.931
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability