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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: BLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-5187.600968
Energy at 298.15K 
HF Energy-5187.600968
Nuclear repulsion energy343.985675
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 BLYP/6-311+G(3df,2p)
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 3058 3041 0.90 87.12 0.05 0.10
2 A1 1392 1385 0.03 12.11 0.47 0.64
3 A1 540 537 3.24 19.47 0.06 0.12
4 A1 159 158 0.05 4.91 0.34 0.51
5 A2 1071 1065 0.00 0.86 0.75 0.86
6 B1 3146 3129 2.37 44.49 0.75 0.86
7 B1 787 783 3.73 0.40 0.75 0.86
8 B2 1171 1165 62.62 0.15 0.75 0.86
9 B2 565 562 123.69 3.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5945.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 5912.3 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 BLYP/6-311+G(3df,2p)
ABC
0.86810 0.03877 0.03739

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.943
H2 -0.907 0.000 1.541
H3 0.907 0.000 1.541
Br4 0.000 1.657 -0.125
Br5 0.000 -1.657 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08611.08611.97101.9710
H21.08611.81372.51822.5182
H31.08611.81372.51822.5182
Br41.97102.51822.51823.3130
Br51.97102.51822.51823.3130

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.222 H2 C1 Br4 107.351
H2 C1 Br5 107.351 H3 C1 Br4 107.351
H3 C1 Br5 107.351 Br4 C1 Br5 114.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.392      
2 H 0.215      
3 H 0.215      
4 Br -0.019      
5 Br -0.019      


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 1.450 1.450
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.755 0.000 0.000
y 0.000 -45.230 0.000
z 0.000 0.000 -41.347
Traceless
 xyz
x -0.466 0.000 0.000
y 0.000 -2.679 0.000
z 0.000 0.000 3.145
Polar
3z2-r26.289
x2-y21.475
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.034 0.000 0.000
y 0.000 12.224 0.000
z 0.000 0.000 7.676


<r2> (average value of r2) Å2
<r2> 232.038
(<r2>)1/2 15.233