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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-5187.781651
Energy at 298.15K 
HF Energy-5187.781651
Nuclear repulsion energy348.625707
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-pVTZ
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 3137 3035 1.02      
2 A1 1435 1388 0.01      
3 A1 572 554 3.60      
4 A1 167 162 0.07      
5 A2 1112 1076 0.00      
6 B1 3222 3118 2.78      
7 B1 816 789 3.56      
8 B2 1215 1175 64.90      
9 B2 619 599 105.06      

Unscaled Zero Point Vibrational Energy (zpe) 6147.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 5948.1 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-pVTZ
ABC
0.88183 0.03991 0.03847

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.898 0.000 1.534
H3 0.898 0.000 1.534
Br4 0.000 1.633 -0.124
Br5 0.000 -1.633 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08011.08011.94571.9457
H21.08011.79632.49452.4945
H31.08011.79632.49452.4945
Br41.94572.49452.49453.2653
Br51.94572.49452.49453.2653

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.516 H2 C1 Br4 107.588
H2 C1 Br5 107.588 H3 C1 Br4 107.588
H3 C1 Br5 107.588 Br4 C1 Br5 114.087
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.498      
2 H 0.219      
3 H 0.219      
4 Br 0.029      
5 Br 0.029      


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 1.479 1.479
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.481 0.000 0.000
y 0.000 -45.051 0.000
z 0.000 0.000 -41.091
Traceless
 xyz
x -0.410 0.000 0.000
y 0.000 -2.765 0.000
z 0.000 0.000 3.175
Polar
3z2-r26.350
x2-y21.570
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.028 0.000 0.000
y 0.000 11.719 0.000
z 0.000 0.000 7.693


<r2> (average value of r2) Å2
<r2> 226.210
(<r2>)1/2 15.040