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All results from a given calculation for HOClO (Chlorous acid)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C1 1A
1 2 yes CS 1A'

Conformer 1 (C1)

Jump to S1C2
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-606.801087
Energy at 298.15K 
HF Energy-606.494784
Nuclear repulsion energy102.077194
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 MP2/3-21G
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 3313 3162 4.03      
2 A 1126 1075 89.48      
3 A 777 742 84.77      
4 A 398 380 186.96      
5 A 268 256 88.17      
6 A 118i 112i 82.59      

Unscaled Zero Point Vibrational Energy (zpe) 2882.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 2751.1 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 MP2/3-21G
ABC
0.93093 0.23112 0.18686

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 -0.168 -0.502 0.025
O2 1.560 0.309 -0.086
O3 -1.381 0.622 -0.034
H4 1.435 1.095 0.539

Atom - Atom Distances (Å)
  Cl1 O2 O3 H4
Cl11.91271.65482.3215
O21.91272.95831.0123
O31.65482.95832.9130
H42.32151.01232.9130

picture of Chlorous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 O2 H4 100.511 O2 Cl1 O3 111.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-606.803035
Energy at 298.15K-606.804641
HF Energy-606.515417
Nuclear repulsion energy103.102712
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 MP2/3-21G
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' 3092 2952 15.42      
2 A' 1344 1283 83.96      
3 A' 648 618 4.61      
4 A' 546 521 53.58      
5 A' 149 142 7.68      
6 A" 585 558 164.02      

Unscaled Zero Point Vibrational Energy (zpe) 3182.0 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 3037.2 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 MP2/3-21G
ABC
0.58307 0.31429 0.20421

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 0.000 0.652 0.000
O2 -1.254 -0.712 0.000
O3 1.317 -0.497 0.000
H4 -0.511 -1.403 0.000

Atom - Atom Distances (Å)
  Cl1 O2 O3 H4
Cl11.85231.74802.1173
O21.85232.57981.0146
O31.74802.57982.0403
H42.11731.01462.0403

picture of Chlorous acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 O2 H4 90.348 O2 Cl1 O3 91.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability