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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-22.365518
Energy at 298.15K-22.366914
HF Energy-22.189068
Nuclear repulsion energy17.139397
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' 3667 3544 65.32      
2 A' 2941 2841 174.53      
3 A' 1491 1441 47.98      
4 A' 1189 1149 3.58      
5 A' 1163 1124 261.38      
6 A" 1099 1062 179.07      

Unscaled Zero Point Vibrational Energy (zpe) 5775.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 5580.5 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 MP2/CEP-31G
ABC
9.41515 1.09375 0.97992

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 0.012 0.789 0.000
O2 0.012 -0.598 0.000
H3 -1.096 1.003 0.000
H4 0.934 -0.955 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.38631.12861.9722
O21.38631.94690.9888
H31.12861.94692.8203
H41.97220.98882.8203

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 111.165 O2 C1 H3 100.953
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-22.352607
Energy at 298.15K-22.353988
HF Energy-22.175338
Nuclear repulsion energy17.060504
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' 3504 3386 0.20      
2 A' 2773 2680 299.84      
3 A' 1454 1405 83.94      
4 A' 1213 1172 15.13      
5 A' 1150 1111 144.92      
6 A" 1008 974 59.11      

Unscaled Zero Point Vibrational Energy (zpe) 5550.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 5363.4 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/CEP-31G
ABC
9.13043 1.08725 0.97155

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 0.123 0.789 0.000
O2 0.123 -0.593 0.000
H3 -0.980 1.096 0.000
H4 -0.743 -1.087 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.38221.14522.0661
O21.38222.01780.9970
H31.14522.01782.1958
H42.06610.99702.1958

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 119.668 O2 C1 H3 105.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability