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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD/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/cc-pVDZ
 hartrees
Energy at 0K-114.128125
Energy at 298.15K-114.129541
HF Energy-113.798953
Nuclear repulsion energy30.467009
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/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' 3762 3609 78.50      
2 A' 2853 2737 183.87      
3 A' 1528 1466 25.10      
4 A' 1336 1282 62.68      
5 A' 1227 1178 127.88      
6 A" 1098 1053 117.76      

Unscaled Zero Point Vibrational Energy (zpe) 5902.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 5662.6 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/cc-pVDZ
ABC
9.29745 1.20242 1.06472

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.748 0.000
O2 0.011 -0.576 0.000
H3 -1.098 0.974 0.000
H4 0.943 -0.852 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32461.13161.8517
O21.32461.90620.9716
H31.13161.90622.7383
H41.85170.97162.7383

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 106.480 O2 C1 H3 101.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-114.120596
Energy at 298.15K-114.122000
HF Energy-113.791075
Nuclear repulsion energy30.420577
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/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' 3657 3509 19.26      
2 A' 2758 2646 250.19      
3 A' 1491 1430 38.09      
4 A' 1339 1285 82.98      
5 A' 1238 1188 31.48      
6 A" 1013 972 33.08      

Unscaled Zero Point Vibrational Energy (zpe) 5748.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 5514.7 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/cc-pVDZ
ABC
9.01387 1.20096 1.05976

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.124 0.747 0.000
O2 0.124 -0.573 0.000
H3 -0.969 1.067 0.000
H4 -0.771 -0.961 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32011.13911.9284
O21.32011.97130.9757
H31.13911.97132.0378
H41.92840.97572.0378

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 113.418 O2 C1 H3 106.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability