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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/6-311G**

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/6-311G**
 hartrees
Energy at 0K-5187.609285
Energy at 298.15K 
HF Energy-5187.609285
Nuclear repulsion energy347.314755
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/6-311G**
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 3135 3031 3.03      
2 A1 1436 1388 0.04      
3 A1 569 550 4.08      
4 A1 168 162 0.06      
5 A2 1117 1080 0.00      
6 B1 3223 3116 0.47      
7 B1 814 787 7.06      
8 B2 1226 1185 78.39      
9 B2 613 593 116.94      

Unscaled Zero Point Vibrational Energy (zpe) 6150.1 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 5945.9 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/6-311G**
ABC
0.88344 0.03955 0.03813

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
H2 -0.900 0.000 1.535
H3 0.900 0.000 1.535
Br4 0.000 1.640 -0.124
Br5 0.000 -1.640 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08291.08291.95101.9510
H21.08291.79962.50052.5005
H31.08291.79962.50052.5005
Br41.95102.50052.50053.2804
Br51.95102.50052.50053.2804

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.375 H2 C1 Br4 107.538
H2 C1 Br5 107.538 H3 C1 Br4 107.538
H3 C1 Br5 107.538 Br4 C1 Br5 114.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.383      
2 H 0.204      
3 H 0.204      
4 Br -0.012      
5 Br -0.012      


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 1.583 1.583
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.393 0.000 0.000
y 0.000 -44.702 0.000
z 0.000 0.000 -40.945
Traceless
 xyz
x -0.569 0.000 0.000
y 0.000 -2.533 0.000
z 0.000 0.000 3.102
Polar
3z2-r26.205
x2-y21.310
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.026 0.000 0.000
y 0.000 9.488 0.000
z 0.000 0.000 5.160


<r2> (average value of r2) Å2
<r2> 227.807
(<r2>)1/2 15.093