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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-65.617848
Energy at 298.15K 
HF Energy-65.617848
Nuclear repulsion energy41.719195
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/LANL2DZ
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 3168 3045 8.72      
2 A1 1436 1380 0.09      
3 A1 532 511 4.85      
4 A1 163 157 0.04      
5 A2 1119 1076 0.00      
6 B1 3276 3149 1.65      
7 B1 816 784 11.54      
8 B2 1240 1192 61.78      
9 B2 581 558 117.39      

Unscaled Zero Point Vibrational Energy (zpe) 6165.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 5925.8 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 B3LYP/LANL2DZ
ABC
0.83525 0.03736 0.03601

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.966
H2 -0.907 0.000 1.565
H3 0.907 0.000 1.565
Br4 0.000 1.688 -0.127
Br5 0.000 -1.688 -0.127

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08661.08662.01092.0109
H21.08661.81342.55612.5561
H31.08661.81342.55612.5561
Br42.01092.55612.55613.3755
Br52.01092.55612.55613.3755

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.119 H2 C1 Br4 107.434
H2 C1 Br5 107.434 H3 C1 Br4 107.434
H3 C1 Br5 107.434 Br4 C1 Br5 114.129
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.669      
2 H 0.314      
3 H 0.314      
4 Br 0.020      
5 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 1.872 1.872
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.021 0.000 0.000
y 0.000 -39.143 0.000
z 0.000 0.000 -34.363
Traceless
 xyz
x -0.268 0.000 0.000
y 0.000 -3.451 0.000
z 0.000 0.000 3.719
Polar
3z2-r27.439
x2-y22.122
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.999 0.000 0.000
y 0.000 9.043 0.000
z 0.000 0.000 3.643


<r2> (average value of r2) Å2
<r2> 75.254
(<r2>)1/2 8.675