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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: BLYP/cc-pVTZ-PP

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/cc-pVTZ-PP
 hartrees
Energy at 0K-872.934876
Energy at 298.15K 
HF Energy-872.934876
Nuclear repulsion energy207.335935
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/cc-pVTZ-PP
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 3061 3061 1.93 93.34 0.06 0.11
2 A1 1389 1389 0.24 10.81 0.63 0.77
3 A1 538 538 3.15 15.73 0.07 0.13
4 A1 157 157 0.04 5.86 0.39 0.56
5 A2 1061 1061 0.00 2.97 0.75 0.86
6 B1 3149 3149 0.83 46.89 0.75 0.86
7 B1 784 784 4.43 1.50 0.75 0.86
8 B2 1166 1166 66.69 0.10 0.75 0.86
9 B2 564 564 121.53 3.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5934.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5934.4 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/cc-pVTZ-PP
ABC
0.86616 0.03870 0.03732

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.945
H2 -0.907 0.000 1.542
H3 0.907 0.000 1.542
Br4 0.000 1.658 -0.125
Br5 0.000 -1.658 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08621.08621.97311.9731
H21.08621.81462.52002.5200
H31.08621.81462.52002.5200
Br41.97312.52002.52003.3160
Br51.97312.52002.52003.3160

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.294 H2 C1 Br4 107.341
H2 C1 Br5 107.341 H3 C1 Br4 107.341
H3 C1 Br5 107.341 Br4 C1 Br5 114.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.218      
2 H 0.145      
3 H 0.145      
4 Br -0.036      
5 Br -0.036      


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 1.392 1.392
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.849 0.000 0.000
y 0.000 -43.912 0.000
z 0.000 0.000 -40.526
Traceless
 xyz
x -0.630 0.000 0.000
y 0.000 -2.224 0.000
z 0.000 0.000 2.855
Polar
3z2-r25.709
x2-y21.063
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.522 0.000 0.000
y 0.000 11.036 0.000
z 0.000 0.000 6.484


<r2> (average value of r2) Å2
<r2> 176.484
(<r2>)1/2 13.285