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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B1B95/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 B1B95/daug-cc-pVDZ
 hartrees
Energy at 0K-5188.247506
Energy at 298.15K 
HF Energy-5188.247506
Nuclear repulsion energy352.592809
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 B1B95/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 3152 3152 1.15 98.42 0.04 0.08
2 A1 1400 1400 0.01 9.59 0.53 0.70
3 A1 596 596 3.79 18.73 0.06 0.12
4 A1 172 172 0.09 3.48 0.33 0.50
5 A2 1112 1112 0.00 1.08 0.75 0.86
6 B1 3248 3248 2.78 45.74 0.75 0.86
7 B1 810 810 3.48 0.41 0.75 0.86
8 B2 1196 1196 59.38 0.10 0.75 0.86
9 B2 663 663 98.96 4.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6174.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6174.1 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 B1B95/daug-cc-pVDZ
ABC
0.88083 0.04102 0.03950

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
H2 -0.904 0.000 1.540
H3 0.904 0.000 1.540
Br4 0.000 1.610 -0.124
Br5 0.000 -1.610 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08851.08851.92631.9263
H21.08851.80742.48552.4855
H31.08851.80742.48552.4855
Br41.92632.48552.48553.2206
Br51.92632.48552.48553.2206

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.254 H2 C1 Br4 107.810
H2 C1 Br5 107.810 H3 C1 Br4 107.810
H3 C1 Br5 107.810 Br4 C1 Br5 113.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.132      
2 H -0.218      
3 H -0.218      
4 Br 0.284      
5 Br 0.284      


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 1.490 1.490
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.218 0.000 0.000
y 0.000 -44.586 0.000
z 0.000 0.000 -40.701
Traceless
 xyz
x -0.575 0.000 0.000
y 0.000 -2.626 0.000
z 0.000 0.000 3.201
Polar
3z2-r26.402
x2-y21.368
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.903 0.000 0.000
y 0.000 11.307 0.000
z 0.000 0.000 7.561


<r2> (average value of r2) Å2
<r2> 220.945
(<r2>)1/2 14.864