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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-114.093048
Energy at 298.15K-114.094462
HF Energy-113.781634
Nuclear repulsion energy30.408190
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/6-31G*
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' 3671 3496 54.86      
2 A' 2860 2723 166.73      
3 A' 1543 1469 33.62      
4 A' 1330 1266 58.15      
5 A' 1235 1177 141.12      
6 A" 1100 1047 128.82      

Unscaled Zero Point Vibrational Energy (zpe) 5869.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 5589.3 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 QCISD/6-31G*
ABC
9.39844 1.19477 1.06002

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.752 0.000
O2 0.010 -0.576 0.000
H3 -1.089 0.971 0.000
H4 0.942 -0.871 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32821.12111.8712
O21.32821.89830.9773
H31.12111.89832.7421
H41.87120.97732.7421

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.538 O2 C1 H3 101.283
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-114.084528
Energy at 298.15K-114.085931
HF Energy-113.772737
Nuclear repulsion energy30.352201
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/6-31G*
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' 3538 3369 9.23      
2 A' 2755 2624 234.12      
3 A' 1502 1430 47.41      
4 A' 1338 1274 69.91      
5 A' 1267 1206 47.24      
6 A" 1015 967 43.72      

Unscaled Zero Point Vibrational Energy (zpe) 5707.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 5434.9 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/6-31G*
ABC
9.16716 1.19128 1.05427

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.751 0.000
O2 0.123 -0.572 0.000
H3 -0.960 1.068 0.000
H4 -0.764 -0.994 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.32291.12881.9577
O21.32291.96560.9828
H31.12881.96562.0714
H41.95770.98282.0714

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 115.431 O2 C1 H3 106.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability