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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYPultrafine/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/cc-pVTZ-PP
 hartrees
Energy at 0K-873.162241
Energy at 298.15K 
HF Energy-873.162241
Nuclear repulsion energy210.192625
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 B3LYPultrafine/cc-pVTZ-PP
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 3133 3133 1.80 91.66 0.06 0.11
2 A1 1434 1434 0.07 10.47 0.63 0.77
3 A1 571 571 3.46 15.82 0.07 0.13
4 A1 166 166 0.06 4.81 0.40 0.57
5 A2 1106 1106 0.00 2.93 0.75 0.86
6 B1 3220 3220 1.37 46.25 0.75 0.86
7 B1 813 813 4.52 1.32 0.75 0.86
8 B2 1212 1212 68.77 0.01 0.75 0.86
9 B2 623 623 103.88 5.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6140.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6140.0 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 B3LYPultrafine/cc-pVTZ-PP
ABC
0.87982 0.03990 0.03845

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ-PP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.936
H2 -0.899 0.000 1.535
H3 0.899 0.000 1.535
Br4 0.000 1.633 -0.124
Br5 0.000 -1.633 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08051.08051.94681.9468
H21.08051.79782.49572.4957
H31.08051.79782.49572.4957
Br41.94682.49572.49573.2658
Br51.94682.49572.49573.2658

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.599 H2 C1 Br4 107.584
H2 C1 Br5 107.584 H3 C1 Br4 107.584
H3 C1 Br5 107.584 Br4 C1 Br5 114.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221      
2 H 0.151      
3 H 0.151      
4 Br -0.040      
5 Br -0.040      


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 1.441 1.441
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.660 0.000 0.000
y 0.000 -43.859 0.000
z 0.000 0.000 -40.308
Traceless
 xyz
x -0.576 0.000 0.000
y 0.000 -2.375 0.000
z 0.000 0.000 2.951
Polar
3z2-r25.903
x2-y21.199
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.401 0.000 0.000
y 0.000 10.464 0.000
z 0.000 0.000 6.336


<r2> (average value of r2) Å2
<r2> 172.083
(<r2>)1/2 13.118