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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: TPSSh/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 TPSSh/TZVP
 hartrees
Energy at 0K-5187.455412
Energy at 298.15K 
HF Energy-5187.455412
Nuclear repulsion energy348.530001
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 TPSSh/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 3139 3025 2.44 100.24 0.07 0.13
2 A1 1444 1392 0.44 16.83 0.64 0.78
3 A1 571 551 5.21 13.53 0.11 0.20
4 A1 166 160 0.10 6.24 0.49 0.65
5 A2 1111 1070 0.00 4.79 0.75 0.86
6 B1 3230 3113 1.06 56.37 0.75 0.86
7 B1 812 782 4.96 2.67 0.75 0.86
8 B2 1220 1176 89.47 1.63 0.75 0.86
9 B2 621 599 122.88 7.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6156.7 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 5933.2 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 TPSSh/TZVP
ABC
0.88270 0.03988 0.03845

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.934
H2 -0.902 0.000 1.533
H3 0.902 0.000 1.533
Br4 0.000 1.633 -0.124
Br5 0.000 -1.633 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08261.08261.94571.9457
H21.08261.80342.49512.4951
H31.08261.80342.49512.4951
Br41.94572.49512.49513.2665
Br51.94572.49512.49513.2665

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.793 H2 C1 Br4 107.507
H2 C1 Br5 107.507 H3 C1 Br4 107.507
H3 C1 Br5 107.507 Br4 C1 Br5 114.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 H 0.169      
3 H 0.169      
4 Br -0.095      
5 Br -0.095      


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 1.625 1.625
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.477 0.000 0.000
y 0.000 9.923 0.000
z 0.000 0.000 5.559


<r2> (average value of r2) Å2
<r2> 226.087
(<r2>)1/2 15.036