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 CaF2 (Calcium difluoride)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Σg
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-876.091504
Energy at 298.15K-876.091720
HF Energy-875.703865
Nuclear repulsion energy102.953344
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 MP2/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 510 481 0.00      
2 Σu 671 633 160.85      
3 Πu 72 68 118.43      
3 Πu 72 68 118.43      

Unscaled Zero Point Vibrational Energy (zpe) 662.1 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 624.4 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 MP2/6-31G*
B
0.10469

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.000
F2 0.000 0.000 2.076
F3 0.000 0.000 -2.076

Atom - Atom Distances (Å)
  Ca1 F2 F3
Ca12.07602.0760
F22.07604.1520
F32.07604.1520

picture of Calcium difluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Ca1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability