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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD(T)/aug-cc-pVDZ

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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-114.165259
Energy at 298.15K-114.166666
HF Energy-113.808876
Nuclear repulsion energy30.298665
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(T)/aug-cc-pVDZ
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' 3712 3630        
2 A' 2846 2783        
3 A' 1499 1465        
4 A' 1267 1239        
5 A' 1204 1178        
6 A" 1075 1051        

Unscaled Zero Point Vibrational Energy (zpe) 5800.9 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 5672.1 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(T)/aug-cc-pVDZ
ABC
9.35495 1.18347 1.05057

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.755 0.000
O2 0.011 -0.580 0.000
H3 -1.096 0.981 0.000
H4 0.939 -0.870 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33441.12991.8715
O21.33441.91350.9726
H31.12991.91352.7513
H41.87150.97262.7513

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.387 O2 C1 H3 101.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-114.157695
Energy at 298.15K-114.159088
HF Energy-113.800439
Nuclear repulsion energy30.194385
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(T)/aug-cc-pVDZ
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' 3600 3520        
2 A' 2754 2693        
3 A' 1455 1422        
4 A' 1270 1242        
5 A' 1213 1186        
6 A" 987 965        

Unscaled Zero Point Vibrational Energy (zpe) 5639.1 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 5513.9 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 QCISD(T)/aug-cc-pVDZ
ABC
9.03446 1.17709 1.04141

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.124 0.755 0.000
O2 0.124 -0.579 0.000
H3 -0.968 1.071 0.000
H4 -0.770 -0.974 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33391.13681.9468
O21.33391.97860.9774
H31.13681.97862.0551
H41.94680.97742.0551

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 113.874 O2 C1 H3 106.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability