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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-114.252168
Energy at 298.15K-114.253582
HF Energy-113.834905
Nuclear repulsion energy30.609297
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)/cc-pVTZ
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' 3753 3560        
2 A' 2854 2707        
3 A' 1513 1436        
4 A' 1318 1251        
5 A' 1214 1152        
6 A" 1090 1034        

Unscaled Zero Point Vibrational Energy (zpe) 5871.2 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 5569.4 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(T)/cc-pVTZ
ABC
9.56269 1.20827 1.07273

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.746 0.000
O2 0.010 -0.574 0.000
H3 -1.080 0.976 0.000
H4 0.934 -0.858 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32031.11451.8515
O21.32031.89560.9666
H31.11451.89562.7247
H41.85150.96662.7247

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.100 O2 C1 H3 101.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-114.244820
Energy at 298.15K-114.246222
HF Energy-113.826990
Nuclear repulsion energy30.538134
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)/cc-pVTZ
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' 3646 3459        
2 A' 2763 2621        
3 A' 1481 1405        
4 A' 1325 1256        
5 A' 1230 1167        
6 A" 1006 954        

Unscaled Zero Point Vibrational Energy (zpe) 5725.2 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 5430.9 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)/cc-pVTZ
ABC
9.24219 1.20507 1.06607

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.746 0.000
O2 0.123 -0.572 0.000
H3 -0.953 1.064 0.000
H4 -0.766 -0.963 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.31781.12141.9259
O21.31781.95750.9710
H31.12141.95752.0349
H41.92590.97102.0349

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 113.731 O2 C1 H3 106.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability