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: B1B95/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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-5262.270617
Energy at 298.15K-5262.276560
HF Energy-5262.270617
Nuclear repulsion energy449.325900
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/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 1898 1818 354.84      
2 A1 441 423 5.97      
3 A1 183 175 0.41      
4 B1 523 501 1.65      
5 B2 767 734 472.62      
6 B2 355 340 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 2083.4 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 1995.7 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/aug-cc-pVDZ
ABC
0.20827 0.04216 0.03506

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.774
O2 0.000 0.000 1.948
Br3 0.000 1.592 -0.289
Br4 0.000 -1.592 -0.289

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17391.91411.9141
O21.17392.74562.7456
Br31.91412.74563.1833
Br41.91412.74563.1833

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 123.744 O2 C1 Br4 123.744
Br3 C1 Br4 112.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.468      
2 O -0.256      
3 Br 0.362      
4 Br 0.362      


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 -1.240 1.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.621 0.000 0.000
y 0.000 -44.300 0.000
z 0.000 0.000 -50.114
Traceless
 xyz
x 0.586 0.000 0.000
y 0.000 4.068 0.000
z 0.000 0.000 -4.654
Polar
3z2-r2-9.308
x2-y2-2.321
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.007 0.000 0.000
y 0.000 11.806 0.000
z 0.000 0.000 8.387


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