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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD/6-31G**

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 QCISD/6-31G**
 hartrees
Energy at 0K-114.112737
Energy at 298.15K-114.114153
HF Energy-113.790009
Nuclear repulsion energy30.495840
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3809 3586 56.65      
2 A' 2903 2733 174.50      
3 A' 1544 1453 31.58      
4 A' 1333 1255 61.17      
5 A' 1231 1158 139.73      
6 A" 1105 1041 123.16      

Unscaled Zero Point Vibrational Energy (zpe) 5962.1 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 5612.7 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/6-31G**
ABC
9.50793 1.19836 1.06423

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.751 0.000
O2 0.011 -0.576 0.000
H3 -1.084 0.967 0.000
H4 0.934 -0.867 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32701.11541.8628
O21.32701.89170.9683
H31.11541.89172.7267
H41.86280.96832.7267

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.473 O2 C1 H3 101.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-114.104597
Energy at 298.15K-114.106002
HF Energy-113.781450
Nuclear repulsion energy30.443283
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3695 3478 10.80      
2 A' 2801 2637 241.39      
3 A' 1509 1420 44.28      
4 A' 1339 1260 76.58      
5 A' 1258 1185 46.93      
6 A" 1020 960 43.14      

Unscaled Zero Point Vibrational Energy (zpe) 5810.9 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 5470.4 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 QCISD/6-31G**
ABC
9.26594 1.19529 1.05872

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.750 0.000
O2 0.123 -0.572 0.000
H3 -0.957 1.060 0.000
H4 -0.758 -0.985 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32221.12281.9457
O21.32221.95670.9727
H31.12281.95672.0543
H41.94570.97272.0543

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.097 O2 C1 H3 106.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability