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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/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 B3LYP/cc-pVDZ
 hartrees
Energy at 0K-5187.614007
Energy at 298.15K 
HF Energy-5187.614007
Nuclear repulsion energy347.293053
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/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 3128 3034 2.57      
2 A1 1405 1363 0.14      
3 A1 571 554 4.52      
4 A1 168 163 0.06      
5 A2 1096 1063 0.00      
6 B1 3223 3127 0.96      
7 B1 803 779 5.11      
8 B2 1198 1162 69.99      
9 B2 618 599 111.22      

Unscaled Zero Point Vibrational Energy (zpe) 6104.8 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 5921.7 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 B3LYP/cc-pVDZ
ABC
0.87700 0.03960 0.03818

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.909 0.000 1.543
H3 0.909 0.000 1.543
Br4 0.000 1.639 -0.124
Br5 0.000 -1.639 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09351.09351.95131.9513
H21.09351.81712.50842.5084
H31.09351.81712.50842.5084
Br41.95132.50842.50843.2779
Br51.95132.50842.50843.2779

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.366 H2 C1 Br4 107.579
H2 C1 Br5 107.579 H3 C1 Br4 107.579
H3 C1 Br5 107.579 Br4 C1 Br5 114.268
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 H 0.118      
3 H 0.118      
4 Br -0.045      
5 Br -0.045      


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 -42.747 0.000 0.000
y 0.000 -43.826 0.000
z 0.000 0.000 -40.404
Traceless
 xyz
x -0.632 0.000 0.000
y 0.000 -2.251 0.000
z 0.000 0.000 2.883
Polar
3z2-r25.766
x2-y21.079
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.916 0.000 0.000
y 0.000 9.046 0.000
z 0.000 0.000 5.021


<r2> (average value of r2) Å2
<r2> 227.207
(<r2>)1/2 15.073