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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/Def2TZVPP
 hartrees
Energy at 0K-5187.688620
Energy at 298.15K 
HF Energy-5187.688620
Nuclear repulsion energy348.778622
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/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 3136 3136 1.70 95.33 0.06 0.10
2 A1 1437 1437 0.03 12.01 0.62 0.76
3 A1 573 573 3.92 15.22 0.09 0.16
4 A1 168 168 0.08 4.64 0.41 0.58
5 A2 1114 1114 0.00 2.03 0.75 0.86
6 B1 3223 3223 1.63 47.77 0.75 0.86
7 B1 814 814 4.34 1.06 0.75 0.86
8 B2 1217 1217 66.10 0.00 0.75 0.86
9 B2 625 625 103.57 5.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6153.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6153.7 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 B3LYPultrafine/Def2TZVPP
ABC
0.88325 0.03995 0.03850

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
H2 -0.898 0.000 1.534
H3 0.898 0.000 1.534
Br4 0.000 1.632 -0.124
Br5 0.000 -1.632 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08071.08071.94451.9445
H21.08071.79612.49402.4940
H31.08071.79612.49402.4940
Br41.94452.49402.49403.2640
Br51.94452.49402.49403.2640

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.405 H2 C1 Br4 107.604
H2 C1 Br5 107.604 H3 C1 Br4 107.604
H3 C1 Br5 107.604 Br4 C1 Br5 114.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.219      
2 H 0.182      
3 H 0.182      
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 1.511 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.304 0.000 0.000
y 0.000 -44.867 0.000
z 0.000 0.000 -40.927
Traceless
 xyz
x -0.407 0.000 0.000
y 0.000 -2.752 0.000
z 0.000 0.000 3.159
Polar
3z2-r26.318
x2-y21.563
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.707 0.000 0.000
y 0.000 10.737 0.000
z 0.000 0.000 6.607


<r2> (average value of r2) Å2
<r2> 225.939
(<r2>)1/2 15.031