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 CH2Br2 (dibromomethane)

using model chemistry: B97D3/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/Def2TZVPP
 hartrees
Energy at 0K-5190.248134
Energy at 298.15K 
HF Energy-5190.248134
Nuclear repulsion energy347.311709
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 B97D3/Def2TZVPP
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 3081 3039 2.76 97.99 0.05 0.10
2 A1 1401 1382 0.13 11.86 0.63 0.77
3 A1 553 545 3.96 14.69 0.09 0.16
4 A1 164 162 0.07 5.32 0.40 0.57
5 A2 1087 1072 0.00 1.91 0.75 0.86
6 B1 3172 3129 0.61 48.55 0.75 0.86
7 B1 798 787 4.21 1.13 0.75 0.86
8 B2 1186 1170 63.79 0.03 0.75 0.86
9 B2 581 573 121.90 4.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6011.3 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 5928.9 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 B97D3/Def2TZVPP
ABC
0.88017 0.03958 0.03816

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.904 0.000 1.535
H3 0.904 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
C11.08561.08561.95181.9518
H21.08561.80852.50192.5019
H31.08561.80852.50192.5019
Br41.95182.50192.50193.2792
Br51.95182.50192.50193.2792

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.813 H2 C1 Br4 107.467
H2 C1 Br5 107.467 H3 C1 Br4 107.467
H3 C1 Br5 107.467 Br4 C1 Br5 114.293
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.164      
2 H 0.154      
3 H 0.154      
4 Br -0.072      
5 Br -0.072      


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 1.494 1.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.907 0.000 0.000
y 0.000 -44.476 0.000
z 0.000 0.000 -40.559
Traceless
 xyz
x -0.389 0.000 0.000
y 0.000 -2.744 0.000
z 0.000 0.000 3.133
Polar
3z2-r26.266
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 5.804 0.000 0.000
y 0.000 11.069 0.000
z 0.000 0.000 6.706


<r2> (average value of r2) Å2
<r2> 227.485
(<r2>)1/2 15.083