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 BeCl2 (Beryllium chloride)

using model chemistry: CCSD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-934.132104
Energy at 298.15K-934.131603
HF Energy-933.800287
Nuclear repulsion energy81.834898
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 CCSD(T)/TZVP
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 392 378        
2 Σu 1144 1101        
3 Πu 246 237        
3 Πu 246 237        

Unscaled Zero Point Vibrational Energy (zpe) 1014.1 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 976.1 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 CCSD(T)/TZVP
B
0.07327

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.000
Cl2 0.000 0.000 1.814
Cl3 0.000 0.000 -1.814

Atom - Atom Distances (Å)
  Be1 Cl2 Cl3
Be11.81371.8137
Cl21.81373.6274
Cl31.81373.6274

picture of Beryllium chloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 Be1 Cl3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability