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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/SDD
 hartrees
Energy at 0K-65.263053
Energy at 298.15K 
HF Energy-65.263053
Nuclear repulsion energy42.510692
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 HF/SDD
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 3362 3027 12.79 141.74 0.07 0.12
2 A1 1575 1418 1.87 19.39 0.56 0.71
3 A1 588 530 7.52 41.54 0.12 0.21
4 A1 181 163 0.07 10.48 0.58 0.73
5 A2 1240 1116 0.00 13.58 0.75 0.86
6 B1 3471 3125 0.14 73.85 0.75 0.86
7 B1 894 805 8.40 7.68 0.75 0.86
8 B2 1365 1229 122.60 0.27 0.75 0.86
9 B2 670 604 120.14 27.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6672.6 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 6008.0 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 HF/SDD
ABC
0.85227 0.03913 0.03768

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.956
H2 -0.891 0.000 1.551
H3 0.891 0.000 1.551
Br4 0.000 1.649 -0.126
Br5 0.000 -1.649 -0.126

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.07101.07101.97281.9728
H21.07101.78132.51532.5153
H31.07101.78132.51532.5153
Br41.97282.51532.51533.2982
Br51.97282.51532.51533.2982

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.529 H2 C1 Br4 107.747
H2 C1 Br5 107.747 H3 C1 Br4 107.747
H3 C1 Br5 107.747 Br4 C1 Br5 113.424
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.721      
2 H 0.297      
3 H 0.297      
4 Br 0.063      
5 Br 0.063      


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 2.068 2.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.975 0.000 0.000
y 0.000 -40.251 0.000
z 0.000 0.000 -34.269
Traceless
 xyz
x 0.285 0.000 0.000
y 0.000 -4.630 0.000
z 0.000 0.000 4.345
Polar
3z2-r28.690
x2-y23.276
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.257 0.000 0.000
y 0.000 9.131 0.000
z 0.000 0.000 3.940


<r2> (average value of r2) Å2
<r2> 73.398
(<r2>)1/2 8.567