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 COBr2 (Carbonic dibromide)

using model chemistry: B3LYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-5261.657587
Energy at 298.15K-5261.663461
HF Energy-5261.657587
Nuclear repulsion energy443.461391
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 B3LYP/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1868 1813 349.29      
2 A1 417 405 5.97      
3 A1 177 171 0.50      
4 B1 514 499 1.63      
5 B2 726 704 467.32      
6 B2 341 331 4.87      

Unscaled Zero Point Vibrational Energy (zpe) 2021.2 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 1961.4 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 B3LYP/aug-cc-pVDZ
ABC
0.20522 0.04088 0.03409

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.784
O2 0.000 0.000 1.961
Br3 0.000 1.616 -0.291
Br4 0.000 -1.616 -0.291

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17711.94151.9415
O21.17712.77242.7724
Br31.94152.77243.2329
Br41.94152.77243.2329

picture of Carbonic dibromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 Br3 123.635 O2 C1 Br4 123.635
Br3 C1 Br4 112.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.404      
2 O -0.239      
3 Br 0.322      
4 Br 0.322      


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 -1.198 1.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.971 0.000 0.000
y 0.000 -44.849 0.000
z 0.000 0.000 -50.541
Traceless
 xyz
x 0.724 0.000 0.000
y 0.000 3.907 0.000
z 0.000 0.000 -4.631
Polar
3z2-r2-9.262
x2-y2-2.122
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.125 0.000 0.000
y 0.000 12.319 0.000
z 0.000 0.000 8.561


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000