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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD/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/aug-cc-pVDZ
 hartrees
Energy at 0K-114.154706
Energy at 298.15K-114.156116
HF Energy-113.809352
Nuclear repulsion energy30.384902
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/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' 3750 3633 76.72      
2 A' 2872 2782 139.27      
3 A' 1510 1463 28.04      
4 A' 1285 1244 68.07      
5 A' 1219 1181 144.97      
6 A" 1076 1043 113.40      

Unscaled Zero Point Vibrational Energy (zpe) 5855.8 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 5672.5 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/aug-cc-pVDZ
ABC
9.42997 1.18986 1.05655

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.752 0.000
O2 0.011 -0.578 0.000
H3 -1.093 0.982 0.000
H4 0.936 -0.872 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.33001.12761.8689
O21.33001.91100.9702
H31.12761.91102.7481
H41.86890.97022.7481

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.653 O2 C1 H3 101.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD/aug-cc-pVDZ
 hartrees
Energy at 0K-114.147000
Energy at 298.15K-114.148396
HF Energy-113.800883
Nuclear repulsion energy30.278794
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/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' 3650 3536 18.16      
2 A' 2781 2694 199.51      
3 A' 1469 1423 41.69      
4 A' 1285 1245 58.12      
5 A' 1233 1195 70.21      
6 A" 990 959 28.04      

Unscaled Zero Point Vibrational Energy (zpe) 5703.3 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 5524.7 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/aug-cc-pVDZ
ABC
9.08894 1.18357 1.04720

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.124 0.753 0.000
O2 0.124 -0.577 0.000
H3 -0.965 1.070 0.000
H4 -0.767 -0.972 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32991.13451.9416
O21.32991.97490.9745
H31.13451.97492.0524
H41.94160.97452.0524

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 113.937 O2 C1 H3 106.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability