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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: CCSD/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/aug-cc-pVQZ
 hartrees
Energy at 0K-114.272501
Energy at 298.15K-114.273920
HF Energy-113.845562
Nuclear repulsion energy30.840874
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/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' 3806 3629 90.34      
2 A' 2899 2764 120.38      
3 A' 1525 1454 25.35      
4 A' 1356 1292 96.85      
5 A' 1236 1178 138.36      
6 A" 1094 1043 116.23      

Unscaled Zero Point Vibrational Energy (zpe) 5957.9 cm-1
Scaled (by 0.9534) Zero Point Vibrational Energy (zpe) 5680.3 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/aug-cc-pVQZ
ABC
9.77221 1.22612 1.08943

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.739 0.000
O2 0.011 -0.568 0.000
H3 -1.073 0.979 0.000
H4 0.924 -0.869 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30751.11001.8498
O21.30751.88930.9618
H31.11001.88932.7214
H41.84980.96182.7214

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.237 O2 C1 H3 102.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCSD/aug-cc-pVQZ
 hartrees
Energy at 0K-114.264696
Energy at 298.15K-114.266103
HF Energy-113.837188
Nuclear repulsion energy30.737271
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/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' 3711 3538 24.69      
2 A' 2809 2678 176.14      
3 A' 1494 1424 42.19      
4 A' 1351 1288 100.30      
5 A' 1257 1199 46.80      
6 A" 1016 969 27.35      

Unscaled Zero Point Vibrational Energy (zpe) 5819.1 cm-1
Scaled (by 0.9534) Zero Point Vibrational Energy (zpe) 5547.9 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/aug-cc-pVQZ
ABC
9.39357 1.22048 1.08014

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.740 0.000
O2 0.122 -0.567 0.000
H3 -0.947 1.064 0.000
H4 -0.757 -0.967 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.30751.11691.9202
O21.30751.95050.9657
H31.11691.95052.0400
H41.92020.96572.0400

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.443 O2 C1 H3 106.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability