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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: CCSD/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 CCSD/aug-cc-pVTZ
 hartrees
Energy at 0K-114.244644
Energy at 298.15K-114.246061
HF Energy-113.837986
Nuclear repulsion energy30.745510
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-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' 3788 3621 87.06      
2 A' 2891 2764 122.51      
3 A' 1523 1456 25.35      
4 A' 1347 1287 96.28      
5 A' 1231 1176 136.93      
6 A" 1089 1040 115.52      

Unscaled Zero Point Vibrational Energy (zpe) 5934.0 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 5671.8 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-pVTZ
ABC
9.71330 1.21825 1.08248

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.742 0.000
O2 0.011 -0.570 0.000
H3 -1.075 0.980 0.000
H4 0.927 -0.869 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31241.11141.8539
O21.31241.89260.9643
H31.11141.89262.7257
H41.85390.96432.7257

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.068 O2 C1 H3 102.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCSD/aug-cc-pVTZ
 hartrees
Energy at 0K-114.236890
Energy at 298.15K-114.238296
HF Energy-113.829627
Nuclear repulsion energy30.642673
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-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' 3691 3528 23.07      
2 A' 2801 2677 178.31      
3 A' 1489 1423 41.53      
4 A' 1343 1284 97.63      
5 A' 1253 1198 47.79      
6 A" 1010 966 26.83      

Unscaled Zero Point Vibrational Energy (zpe) 5794.2 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 5538.1 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 CCSD/aug-cc-pVTZ
ABC
9.34496 1.21256 1.07329

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 0.743 0.000
O2 0.122 -0.569 0.000
H3 -0.949 1.066 0.000
H4 -0.761 -0.968 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31221.11841.9249
O21.31221.95480.9684
H31.11841.95482.0427
H41.92490.96842.0427

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.298 O2 C1 H3 106.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability