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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: CCSD(T)/aug-cc-pVQZ

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 CCSD(T)/aug-cc-pVQZ
 hartrees
Energy at 0K-114.290165
Energy at 298.15K-114.291578
HF Energy-113.845057
Nuclear repulsion energy30.703938
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 CCSD(T)/aug-cc-pVQZ
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' 3753 3608        
2 A' 2870 2759        
3 A' 1507 1448        
4 A' 1321 1270        
5 A' 1215 1168        
6 A" 1085 1043        

Unscaled Zero Point Vibrational Energy (zpe) 5875.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5648.4 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 CCSD(T)/aug-cc-pVQZ
ABC
9.66939 1.21531 1.07962

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.743 0.000
O2 0.011 -0.571 0.000
H3 -1.077 0.979 0.000
H4 0.929 -0.868 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31461.11241.8543
O21.31461.89340.9653
H31.11241.89342.7263
H41.85430.96532.7263

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.867 O2 C1 H3 102.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCSD(T)/aug-cc-pVQZ
 hartrees
Energy at 0K-114.282553
Energy at 298.15K-114.283954
HF Energy-113.836720
Nuclear repulsion energy30.607322
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 CCSD(T)/aug-cc-pVQZ
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' 3646 3505        
2 A' 2780 2673        
3 A' 1475 1418        
4 A' 1323 1272        
5 A' 1232 1184        
6 A" 1007 968        

Unscaled Zero Point Vibrational Energy (zpe) 5731.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 5509.9 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 CCSD(T)/aug-cc-pVQZ
ABC
9.31387 1.21006 1.07093

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.744 0.000
O2 0.122 -0.570 0.000
H3 -0.950 1.065 0.000
H4 -0.762 -0.968 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31381.11931.9271
O21.31381.95530.9698
H31.11931.95532.0421
H41.92710.96982.0421

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.256 O2 C1 H3 106.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability