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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-114.347807
Energy at 298.15K-114.343960
HF Energy-113.783516
Nuclear repulsion energy31.047636
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 HF/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' 4049 3815 104.74      
2 A' 3101 2922 162.20      
3 A' 1646 1551 53.34      
4 A' 1447 1363 138.44      
5 A' 1332 1255 140.38      
6 A" 1127 1062 148.23      

Unscaled Zero Point Vibrational Energy (zpe) 6351.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5984.0 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/6-31G*
ABC
9.47404 1.20610 1.06990

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.748 0.000
O2 0.010 -0.574 0.000
H3 -1.081 0.969 0.000
H4 0.943 -0.865 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32181.11311.8633
O21.32181.88990.9776
H31.11311.88992.7316
H41.86330.97762.7316

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 109.479 O2 C1 H3 103.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-114.340332
Energy at 298.15K-114.341785
HF Energy-113.774487
Nuclear repulsion energy30.968213
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 HF/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' 3979 3749 39.10      
2 A' 2997 2823 234.35      
3 A' 1611 1518 57.15      
4 A' 1449 1365 198.39      
5 A' 1370 1291 14.96      
6 A" 1042 982 51.62      

Unscaled Zero Point Vibrational Energy (zpe) 6223.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 5863.4 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/6-31G*
ABC
9.26267 1.20291 1.06465

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.747 0.000
O2 0.123 -0.569 0.000
H3 -0.952 1.067 0.000
H4 -0.765 -0.993 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31561.12101.9530
O21.31561.95700.9834
H31.12101.95702.0686
H41.95300.98342.0686

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 116.141 O2 C1 H3 107.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability