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All results from a given calculation for HOCH (hydroxycarbene)

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-113.343897
Energy at 298.15K-113.345310
HF Energy-113.144655
Nuclear repulsion energy29.776328
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 MP2=FULL/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' 3484 3327 47.56      
2 A' 2822 2695 170.12      
3 A' 1526 1457 28.30      
4 A' 1272 1215 0.00      
5 A' 1190 1136 192.59      
6 A" 1129 1078 146.44      

Unscaled Zero Point Vibrational Energy (zpe) 5711.7 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 5453.5 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 MP2=FULL/3-21G
ABC
9.39077 1.13401 1.01182

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.772 0.000
O2 0.010 -0.589 0.000
H3 -1.088 1.001 0.000
H4 0.948 -0.917 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.36111.12161.9320
O21.36111.93270.9937
H31.12161.93272.7974
H41.93200.99372.7974

picture of hydroxycarbene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 109.264 O2 C1 H3 101.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-113.334556
Energy at 298.15K-113.335961
HF Energy-113.134825
Nuclear repulsion energy29.784747
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 MP2=FULL/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' 3312 3162 2.31      
2 A' 2658 2538 246.56      
3 A' 1491 1424 70.02      
4 A' 1293 1235 17.30      
5 A' 1210 1155 85.32      
6 A" 1057 1009 52.42      

Unscaled Zero Point Vibrational Energy (zpe) 5510.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 5261.2 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 MP2=FULL/3-21G
ABC
9.18637 1.13763 1.01227

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 0.767 0.000
O2 0.123 -0.582 0.000
H3 -0.960 1.107 0.000
H4 -0.762 -1.053 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4
C11.34821.13552.0228
O21.34822.00601.0023
H31.13552.00602.1683
H42.02281.00232.1683

picture of hydroxycarbene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 118.021 O2 C1 H3 107.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability