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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: MP4/3-21G

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 MP4/3-21G
 hartrees
Energy at 0K-113.362986
Energy at 298.15K-113.364386
HF Energy-113.143471
Nuclear repulsion energy29.529829
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 MP4/3-21G
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' 3421 3318        
2 A' 2704 2622        
3 A' 1504 1459        
4 A' 1233 1196        
5 A' 1139 1105        
6 A" 1104 1071        

Unscaled Zero Point Vibrational Energy (zpe) 5552.6 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 5384.9 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 MP4/3-21G
ABC
9.18719 1.11525 0.99452

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.780 0.000
O2 0.010 -0.595 0.000
H3 -1.100 1.000 0.000
H4 0.955 -0.916 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.37471.13191.9409
O21.37471.94320.9974
H31.13191.94322.8092
H41.94090.99742.8092

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.772 O2 C1 H3 101.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-113.353898
Energy at 298.15K-113.355290
HF Energy-113.133822
Nuclear repulsion energy29.552190
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 MP4/3-21G
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' 3244 3146        
2 A' 2532 2456        
3 A' 1466 1422        
4 A' 1254 1216        
5 A' 1158 1123        
6 A" 1032 1001        

Unscaled Zero Point Vibrational Energy (zpe) 5343.1 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 5181.7 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 MP4/3-21G
ABC
9.00740 1.11992 0.99608

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.124 0.773 0.000
O2 0.124 -0.587 0.000
H3 -0.972 1.108 0.000
H4 -0.766 -1.055 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.36031.14652.0335
O21.36032.01891.0059
H31.14652.01892.1727
H42.03351.00592.1727

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 117.710 O2 C1 H3 106.977
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability