return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HClO3 (Chloric Acid)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-685.271151
Energy at 298.15K 
HF Energy-684.371402
Nuclear repulsion energy195.968060
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(2df,p)
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' 3757 3560 91.39      
2 A' 1246 1181 55.96      
3 A' 1062 1006 53.47      
4 A' 679 643 187.71      
5 A' 544 516 20.72      
6 A' 437 414 10.23      
7 A" 1226 1162 201.90      
8 A" 424 401 30.30      
9 A" 151i 143i 67.54      

Unscaled Zero Point Vibrational Energy (zpe) 4611.9 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 4369.3 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(2df,p)
ABC
0.31239 0.28384 0.17176

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 0.358 0.118 0.000
O2 -0.205 -1.459 0.000
H3 -1.171 -1.357 0.000
O4 -0.205 0.689 1.204
O5 -0.205 0.689 -1.204

Atom - Atom Distances (Å)
  Cl1 O2 H3 O4 O5
Cl11.67392.12431.44661.4466
O21.67390.97142.46212.4621
H32.12430.97142.56292.5629
O41.44662.46212.56292.4076
O51.44662.46212.56292.4076

picture of Chloric Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 O2 H5 34.766 O2 Cl1 O3 26.385
O2 Cl1 O4 103.950 O3 Cl1 O4 89.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-685.271449
Energy at 298.15K 
HF Energy-684.370989
Nuclear repulsion energy195.999353
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(2df,p)
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 3768 3570 102.84      
2 A 1268 1201 109.68      
3 A 1211 1147 147.03      
4 A 1055 1000 53.70      
5 A 688 652 179.52      
6 A 552 523 25.19      
7 A 442 419 11.42      
8 A 386 366 8.55      
9 A 172 163 87.76      

Unscaled Zero Point Vibrational Energy (zpe) 4771.1 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 4520.1 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 QCISD/6-31G(2df,p)
ABC
0.31352 0.28467 0.17134

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 -0.162 0.026 -0.342
O2 1.368 -0.527 0.068
H3 1.608 0.048 0.812
O4 -0.164 1.355 0.243
O5 -1.061 -0.888 0.315

Atom - Atom Distances (Å)
  Cl1 O2 H3 O4 O5
Cl11.67792.11261.45231.4407
O21.67790.97052.43362.4687
H32.11260.97052.27382.8721
O41.45232.43362.27382.4174
O51.44072.46872.87212.4174

picture of Chloric Acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 O2 H5 34.416 O2 Cl1 O3 26.647
O2 Cl1 O4 101.810 O3 Cl1 O4 76.791
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability