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All results from a given calculation for COBr2 (Carbonic dibromide)

using model chemistry: PBE1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-5255.950229
Energy at 298.15K-5255.956167
HF Energy-5255.950229
Nuclear repulsion energy450.090481
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 PBE1PBE/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 A1 1939 1843 333.31      
2 A1 442 420 6.31      
3 A1 191 181 0.26      
4 B1 533 506 2.89      
5 B2 771 733 478.07      
6 B2 353 336 2.14      

Unscaled Zero Point Vibrational Energy (zpe) 2113.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 2008.8 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 PBE1PBE/6-31G*
ABC
0.20639 0.04252 0.03526

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.780
O2 0.000 0.000 1.956
Br3 0.000 1.585 -0.290
Br4 0.000 -1.585 -0.290

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17611.91261.9126
O21.17612.74942.7494
Br31.91262.74943.1698
Br41.91262.74943.1698

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 124.036 O2 C1 Br4 124.036
Br3 C1 Br4 111.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.336      
2 O -0.296      
3 Br -0.020      
4 Br -0.020      


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 -1.204 1.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.066 0.000 0.000
y 0.000 -43.897 0.000
z 0.000 0.000 -49.253
Traceless
 xyz
x 0.509 0.000 0.000
y 0.000 3.762 0.000
z 0.000 0.000 -4.271
Polar
3z2-r2-8.542
x2-y2-2.169
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.074 0.000 0.000
y 0.000 9.912 0.000
z 0.000 0.000 6.716


<r2> (average value of r2) Å2
<r2> 244.990
(<r2>)1/2 15.652