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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: M06-2X/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/6-31G**
 hartrees
Energy at 0K-5182.832961
Energy at 298.15K 
HF Energy-5182.832961
Nuclear repulsion energy352.957045
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 M06-2X/6-31G**
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 3174 3017 1.30 92.98 0.08 0.15
2 A1 1458 1386 0.18 12.96 0.74 0.85
3 A1 605 575 5.94 14.15 0.08 0.16
4 A1 183 174 0.10 4.06 0.44 0.61
5 A2 1144 1088 0.00 7.78 0.75 0.86
6 B1 3268 3106 1.75 59.24 0.75 0.86
7 B1 821 780 4.21 2.41 0.75 0.86
8 B2 1240 1179 69.32 1.40 0.75 0.86
9 B2 678 644 94.31 5.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6285.9 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 5974.1 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 M06-2X/6-31G**
ABC
0.87140 0.04120 0.03964

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.940
H2 -0.901 0.000 1.544
H3 0.901 0.000 1.544
Br4 0.000 1.607 -0.125
Br5 0.000 -1.607 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08451.08451.92781.9278
H21.08451.80262.48542.4854
H31.08451.80262.48542.4854
Br41.92782.48542.48543.2137
Br51.92782.48542.48543.2137

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.427 H2 C1 Br4 107.894
H2 C1 Br5 107.894 H3 C1 Br4 107.894
H3 C1 Br5 107.894 Br4 C1 Br5 112.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.279      
2 H 0.216      
3 H 0.216      
4 Br -0.076      
5 Br -0.076      


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 1.613 1.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.873 0.000 0.000
y 0.000 -44.348 0.000
z 0.000 0.000 -40.276
Traceless
 xyz
x -0.561 0.000 0.000
y 0.000 -2.774 0.000
z 0.000 0.000 3.335
Polar
3z2-r26.669
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 4.617 0.000 0.000
y 0.000 8.888 0.000
z 0.000 0.000 5.435


<r2> (average value of r2) Å2
<r2> 220.065
(<r2>)1/2 14.835