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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: MP2/6-31+G**

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 MP2/6-31+G**
 hartrees
Energy at 0K-114.102647
Energy at 298.15K-114.104067
HF Energy-113.798131
Nuclear repulsion energy30.594475
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 MP2/6-31+G**
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' 3795 3569 109.87      
2 A' 3019 2840 126.41      
3 A' 1530 1439 32.49      
4 A' 1349 1269 101.07      
5 A' 1223 1150 131.14      
6 A" 1134 1067 132.73      

Unscaled Zero Point Vibrational Energy (zpe) 6025.1 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 5667.3 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 MP2/6-31+G**
ABC
9.66744 1.20491 1.07138

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.748 0.000
O2 0.010 -0.573 0.000
H3 -1.072 0.972 0.000
H4 0.933 -0.875 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32141.10541.8671
O21.32141.88680.9707
H31.10541.88682.7263
H41.86710.97072.7263

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.117 O2 C1 H3 101.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-114.092118
Energy at 298.15K-114.093525
HF Energy-113.787910
Nuclear repulsion energy30.501753
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 MP2/6-31+G**
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' 3671 3453 21.90      
2 A' 2908 2735 204.13      
3 A' 1490 1402 55.98      
4 A' 1347 1267 109.61      
5 A' 1232 1159 38.86      
6 A" 1041 980 39.67      

Unscaled Zero Point Vibrational Energy (zpe) 5844.6 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 5497.4 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 MP2/6-31+G**
ABC
9.36019 1.19939 1.06316

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.749 0.000
O2 0.122 -0.570 0.000
H3 -0.947 1.059 0.000
H4 -0.760 -0.989 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31921.11341.9488
O21.31921.94920.9761
H31.11341.94922.0570
H41.94880.97612.0570

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.399 O2 C1 H3 106.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability