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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYPultrafine/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-5182.748306
Energy at 298.15K 
HF Energy-5182.748306
Nuclear repulsion energy349.115258
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/6-31+G**
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 3147 3030 1.35 82.32 0.08 0.15
2 A1 1449 1395 0.15 13.77 0.56 0.71
3 A1 572 550 4.39 19.43 0.06 0.12
4 A1 170 164 0.08 4.17 0.45 0.62
5 A2 1135 1093 0.00 5.34 0.75 0.86
6 B1 3241 3120 2.71 51.16 0.75 0.86
7 B1 831 800 4.89 1.24 0.75 0.86
8 B2 1239 1193 87.01 0.61 0.75 0.86
9 B2 620 597 114.01 6.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6201.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 5970.0 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/6-31+G**
ABC
0.86287 0.04021 0.03871

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.946
H2 -0.903 0.000 1.548
H3 0.903 0.000 1.548
Br4 0.000 1.627 -0.125
Br5 0.000 -1.627 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08531.08531.94791.9479
H21.08531.80682.50222.5022
H31.08531.80682.50222.5022
Br41.94792.50222.50223.2532
Br51.94792.50222.50223.2532

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.697 H2 C1 Br4 107.751
H2 C1 Br5 107.751 H3 C1 Br4 107.751
H3 C1 Br5 107.751 Br4 C1 Br5 113.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.278      
2 H 0.212      
3 H 0.212      
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 1.607 1.607
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.720 0.000 0.000
y 0.000 -45.210 0.000
z 0.000 0.000 -41.007
Traceless
 xyz
x -0.611 0.000 0.000
y 0.000 -2.847 0.000
z 0.000 0.000 3.458
Polar
3z2-r26.915
x2-y21.490
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.701 0.000 0.000
y 0.000 10.399 0.000
z 0.000 0.000 6.395


<r2> (average value of r2) Å2
<r2> 225.154
(<r2>)1/2 15.005