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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (Calcium dibromide)

using model chemistry: B1B95/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 B1B95/TZVP
 hartrees
Energy at 0K-5826.822686
Energy at 298.15K 
HF Energy-5826.822686
Nuclear repulsion energy390.059215
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 B1B95/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 158 151 0.00 9.36 0.25 0.40
2 Σu 342 327 76.53 0.00 0.00 0.00
3 Πu 51 49 54.69 0.00 0.00 0.00
3 Πu 51 49 54.69 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 300.7 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 287.8 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 B1B95/TZVP
B
0.01433

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.000
Br2 0.000 0.000 2.730
Br3 0.000 0.000 -2.730

Atom - Atom Distances (Å)
  Ca1 Br2 Br3
Ca12.73032.7303
Br22.73035.4606
Br32.73035.4606

picture of Calcium dibromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Ca1 Br3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 1.433      
2 Br -0.716      
3 Br -0.716      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -52.028 0.000 0.000
y 0.000 -52.028 0.000
z 0.000 0.000 -92.954
Traceless
 xyz
x 20.463 0.000 0.000
y 0.000 20.463 0.000
z 0.000 0.000 -40.926
Polar
3z2-r2-81.851
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.970 0.000 0.000
y 0.000 5.970 0.000
z 0.000 0.000 12.733


<r2> (average value of r2) Å2
<r2> 562.825
(<r2>)1/2 23.724