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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: CCD/3-21G*

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 CCD/3-21G*
 hartrees
Energy at 0K-113.352972
Energy at 298.15K-113.354381
HF Energy-113.144798
Nuclear repulsion energy29.825744
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 CCD/3-21G*
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' 3494 3342 25.63      
2 A' 2725 2607 168.48      
3 A' 1524 1457 35.52      
4 A' 1277 1222 3.31      
5 A' 1207 1154 214.02      
6 A" 1099 1051 147.45      

Unscaled Zero Point Vibrational Energy (zpe) 5662.7 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 5416.4 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 CCD/3-21G*
ABC
9.38704 1.13937 1.01604

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.770 0.000
O2 0.011 -0.587 0.000
H3 -1.095 1.001 0.000
H4 0.943 -0.926 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.35621.12971.9350
O21.35621.93460.9919
H31.12971.93462.8046
H41.93500.99192.8046

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 110.022 O2 C1 H3 101.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-113.344191
Energy at 298.15K-113.345590
HF Energy-113.134834
Nuclear repulsion energy29.810157
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 CCD/3-21G*
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' 3336 3191 5.79      
2 A' 2565 2454 238.03      
3 A' 1490 1425 65.83      
4 A' 1291 1235 31.32      
5 A' 1223 1170 105.24      
6 A" 1022 977 56.98      

Unscaled Zero Point Vibrational Energy (zpe) 5463.3 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 5225.6 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 CCD/3-21G*
ABC
9.13169 1.14129 1.01450

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.765 0.000
O2 0.123 -0.581 0.000
H3 -0.969 1.105 0.000
H4 -0.758 -1.052 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.34581.14352.0199
O21.34582.00820.9995
H31.14352.00822.1675
H42.01990.99952.1675

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 118.165 O2 C1 H3 107.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability