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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-5257.051899
Energy at 298.15K-5257.057855
HF Energy-5257.051899
Nuclear repulsion energy450.082102
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 mPW1PW91/6-31+G**
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 1901 1809 376.31      
2 A1 438 417 6.67      
3 A1 184 175 0.38      
4 B1 551 524 1.80      
5 B2 760 723 496.86      
6 B2 363 346 1.63      

Unscaled Zero Point Vibrational Energy (zpe) 2098.2 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 1997.0 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 mPW1PW91/6-31+G**
ABC
0.21042 0.04219 0.03514

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.762
O2 0.000 0.000 1.941
Br3 0.000 1.591 -0.287
Br4 0.000 -1.591 -0.287

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17901.90601.9060
O21.17902.73812.7381
Br31.90602.73813.1823
Br41.90602.73813.1823

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 123.404 O2 C1 Br4 123.404
Br3 C1 Br4 113.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.133      
2 O -0.173      
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 -1.385 1.385
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.709 0.000 0.000
y 0.000 -44.347 0.000
z 0.000 0.000 -50.539
Traceless
 xyz
x 0.734 0.000 0.000
y 0.000 4.277 0.000
z 0.000 0.000 -5.011
Polar
3z2-r2-10.022
x2-y2-2.363
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.057 0.000 0.000
y 0.000 10.955 0.000
z 0.000 0.000 7.693


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