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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: BLYP/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-5187.755427
Energy at 298.15K 
HF Energy-5187.755427
Nuclear repulsion energy343.896776
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/daug-cc-pVTZ
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 3064 3064 1.10 96.86 0.05 0.09
2 A1 1389 1389 0.10 11.90 0.47 0.64
3 A1 539 539 3.27 20.15 0.06 0.12
4 A1 159 159 0.05 4.86 0.31 0.48
5 A2 1069 1069 0.00 0.71 0.75 0.86
6 B1 3148 3148 2.13 45.32 0.75 0.86
7 B1 787 787 3.57 0.34 0.75 0.86
8 B2 1169 1169 63.66 0.24 0.75 0.86
9 B2 563 563 123.35 3.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5943.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5943.5 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/daug-cc-pVTZ
ABC
0.86805 0.03875 0.03737

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

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
C11.08591.08591.97151.9715
H21.08591.81312.51852.5185
H31.08591.81312.51852.5185
Br41.97152.51852.51853.3140
Br51.97152.51852.51853.3140

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.204 H2 C1 Br4 107.352
H2 C1 Br5 107.352 H3 C1 Br4 107.352
H3 C1 Br5 107.352 Br4 C1 Br5 114.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.016      
2 H 0.356      
3 H 0.356      
4 Br -0.348      
5 Br -0.348      


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 1.440 1.440
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.737 0.000 0.000
y 0.000 -45.268 0.000
z 0.000 0.000 -41.376
Traceless
 xyz
x -0.415 0.000 0.000
y 0.000 -2.711 0.000
z 0.000 0.000 3.126
Polar
3z2-r26.252
x2-y21.531
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.414 0.000 0.000
y 0.000 12.538 0.000
z 0.000 0.000 8.080


<r2> (average value of r2) Å2
<r2> 232.167
(<r2>)1/2 15.237