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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD/aug-cc-pVTZ

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 QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-114.246065
Energy at 298.15K-114.247480
HF Energy-113.837839
Nuclear repulsion energy30.695208
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 QCISD/aug-cc-pVTZ
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' 3782 3639 86.67      
2 A' 2887 2779 123.58      
3 A' 1519 1462 24.34      
4 A' 1328 1278 81.25      
5 A' 1226 1180 141.86      
6 A" 1083 1043 115.33      

Unscaled Zero Point Vibrational Energy (zpe) 5912.5 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 5690.2 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 QCISD/aug-cc-pVTZ
ABC
9.69400 1.21351 1.07851

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.744 0.000
O2 0.011 -0.572 0.000
H3 -1.076 0.981 0.000
H4 0.928 -0.869 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31531.11171.8555
O21.31531.89490.9647
H31.11171.89492.7273
H41.85550.96472.7273

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.953 O2 C1 H3 102.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-114.238337
Energy at 298.15K-114.239741
HF Energy-113.829487
Nuclear repulsion energy30.594337
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 QCISD/aug-cc-pVTZ
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' 3683 3544 22.06      
2 A' 2796 2691 179.61      
3 A' 1486 1430 41.86      
4 A' 1327 1277 79.95      
5 A' 1247 1200 54.01      
6 A" 1005 967 26.17      

Unscaled Zero Point Vibrational Energy (zpe) 5771.7 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 5554.7 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 QCISD/aug-cc-pVTZ
ABC
9.32765 1.20807 1.06955

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.744 0.000
O2 0.122 -0.571 0.000
H3 -0.949 1.067 0.000
H4 -0.762 -0.968 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31501.11881.9267
O21.31501.95670.9689
H31.11881.95672.0430
H41.92670.96892.0430

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.195 O2 C1 H3 106.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability