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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYPultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/TZVP
 hartrees
Energy at 0K-5187.680163
Energy at 298.15K 
HF Energy-5187.680163
Nuclear repulsion energy347.230309
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 B3LYPultrafine/TZVP
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 3142 3027 2.13 98.02 0.07 0.13
2 A1 1438 1386 0.18 17.50 0.62 0.77
3 A1 566 545 4.65 13.94 0.12 0.21
4 A1 167 161 0.07 6.23 0.48 0.65
5 A2 1114 1073 0.00 4.76 0.75 0.86
6 B1 3231 3113 1.36 55.13 0.75 0.86
7 B1 814 784 5.64 2.57 0.75 0.86
8 B2 1226 1181 85.30 1.15 0.75 0.86
9 B2 615 593 116.39 7.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6156.5 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 5931.1 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 B3LYPultrafine/TZVP
ABC
0.88114 0.03954 0.03812

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.899 0.000 1.536
H3 0.899 0.000 1.536
Br4 0.000 1.640 -0.124
Br5 0.000 -1.640 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08151.08151.95231.9523
H21.08151.79802.50072.5007
H31.08151.79802.50072.5007
Br41.95232.50072.50073.2807
Br51.95232.50072.50073.2807

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.463 H2 C1 Br4 107.542
H2 C1 Br5 107.542 H3 C1 Br4 107.542
H3 C1 Br5 107.542 Br4 C1 Br5 114.325
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 H 0.173      
3 H 0.173      
4 Br -0.078      
5 Br -0.078      


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 1.601 1.601
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.453 0.000 0.000
y 0.000 -44.903 0.000
z 0.000 0.000 -40.962
Traceless
 xyz
x -0.520 0.000 0.000
y 0.000 -2.695 0.000
z 0.000 0.000 3.215
Polar
3z2-r26.431
x2-y21.450
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.510 0.000 0.000
y 0.000 9.993 0.000
z 0.000 0.000 5.603


<r2> (average value of r2) Å2
<r2> 227.921
(<r2>)1/2 15.097