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 Na2Cl2 (Disodium dichloride)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-1245.189702
Energy at 298.15K-1245.190810
HF Energy-1245.189702
Nuclear repulsion energy214.328903
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 TPSSh/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 Ag 265 255 0.00      
2 Ag 133 129 0.00      
3 B1u 283 273 94.05      
4 B2u 231 222 91.33      
5 B3g 235 227 0.00      
6 B3u 91 88 60.31      

Unscaled Zero Point Vibrational Energy (zpe) 618.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 596.8 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 TPSSh/6-31G(2df,p)
ABC
0.14690 0.06073 0.04297

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Na1 0.000 1.618 0.000
Na2 0.000 -1.618 0.000
Cl3 0.000 0.000 1.973
Cl4 0.000 0.000 -1.973

Atom - Atom Distances (Å)
  Na1 Na2 Cl3 Cl4
Na13.23592.55172.5517
Na23.23592.55172.5517
Cl32.55172.55173.9463
Cl42.55172.55173.9463

picture of Disodium dichloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na1 Cl2 Na4 50.649 Na1 Cl3 Na4 39.351
Cl2 Na1 Cl3 50.649 Cl2 Na4 Cl3 39.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability