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All results from a given calculation for HOCO (Hydrocarboxyl radical)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 1A'
1 2 yes CS trans 1A'

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-188.386556
Energy at 298.15K-188.387609
HF Energy-188.063119
Nuclear repulsion energy60.892114
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/SDD
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' 3505 3383 25.44      
2 A' 1868 1803 1419.41      
3 A' 1273 1228 5.35      
4 A' 989 955 158.85      
5 A' 555 536 30.17      
6 A" 618 597 214.03      

Unscaled Zero Point Vibrational Energy (zpe) 4404.2 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 4251.3 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 MP2/SDD
ABC
4.55437 0.36102 0.33450

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.454 0.000
O2 -1.093 -0.389 0.000
O3 1.201 0.219 0.000
H4 -0.869 -1.359 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.37981.22402.0099
O21.37982.37310.9954
O31.22402.37312.6026
H42.00990.99542.6026

picture of Hydrocarboxyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 114.630 O2 C1 O3 131.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-188.392691
Energy at 298.15K-188.393717
HF Energy-188.065164
Nuclear repulsion energy60.688618
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/SDD
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' 3672 3544 76.61      
2 A' 1956 1888 1413.04      
3 A' 1199 1157 243.28      
4 A' 967 933 125.37      
5 A' 556 537 10.75      
6 A" 588 568 143.65      

Unscaled Zero Point Vibrational Energy (zpe) 4468.9 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 4313.8 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/SDD
ABC
5.20637 0.35419 0.33163

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.431 0.000
O2 -0.973 -0.578 0.000
O3 1.208 0.279 0.000
H4 -1.880 -0.192 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.40171.21751.9800
O21.40172.34380.9855
O31.21752.34383.1235
H41.98000.98553.1235

picture of Hydrocarboxyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 110.875 O2 C1 O3 126.836
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability