return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: wB97X-D/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/daug-cc-pVDZ
 hartrees
Energy at 0K-5187.672488
Energy at 298.15K 
HF Energy-5187.672488
Nuclear repulsion energy351.621503
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 wB97X-D/daug-cc-pVDZ
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 3141 3141 1.35 92.97 0.04 0.08
2 A1 1413 1413 0.04 9.57 0.51 0.67
3 A1 601 601 3.96 19.43 0.07 0.12
4 A1 175 175 0.09 3.41 0.32 0.49
5 A2 1124 1124 0.00 1.08 0.75 0.86
6 B1 3236 3236 2.72 42.35 0.75 0.86
7 B1 818 818 3.60 0.39 0.75 0.86
8 B2 1215 1215 62.30 0.25 0.75 0.86
9 B2 680 680 90.32 4.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6201.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6201.3 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 wB97X-D/daug-cc-pVDZ
ABC
0.87604 0.04080 0.03928

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.936
H2 -0.905 0.000 1.545
H3 0.905 0.000 1.545
Br4 0.000 1.615 -0.124
Br5 0.000 -1.615 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09121.09121.93151.9315
H21.09121.80982.49272.4927
H31.09121.80982.49272.4927
Br41.93152.49272.49273.2296
Br51.93152.49272.49273.2296

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.057 H2 C1 Br4 107.855
H2 C1 Br5 107.855 H3 C1 Br4 107.855
H3 C1 Br5 107.855 Br4 C1 Br5 113.443
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.159      
2 H -0.187      
3 H -0.187      
4 Br 0.266      
5 Br 0.266      


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 1.529 1.529
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.346 0.000 0.000
y 0.000 -44.723 0.000
z 0.000 0.000 -40.751
Traceless
 xyz
x -0.609 0.000 0.000
y 0.000 -2.674 0.000
z 0.000 0.000 3.283
Polar
3z2-r26.566
x2-y21.377
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.964 0.000 0.000
y 0.000 11.265 0.000
z 0.000 0.000 7.614


<r2> (average value of r2) Å2
<r2> 222.091
(<r2>)1/2 14.903