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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-5186.742082
Energy at 298.15K 
HF Energy-5186.742082
Nuclear repulsion energy347.977423
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 PBEPBEultrafine/aug-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 3056 3037 1.10 101.54 0.05 0.09
2 A1 1339 1331 0.00 9.94 0.56 0.72
3 A1 566 563 3.09 17.60 0.06 0.11
4 A1 165 164 0.06 4.30 0.36 0.52
5 A2 1059 1053 0.00 0.84 0.75 0.86
6 B1 3153 3134 2.53 48.59 0.75 0.86
7 B1 780 775 4.25 0.40 0.75 0.86
8 B2 1146 1139 53.97 0.04 0.75 0.86
9 B2 608 604 117.41 3.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5935.5 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 5899.3 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.86741 0.03987 0.03841

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.940
H2 -0.915 0.000 1.549
H3 0.915 0.000 1.549
Br4 0.000 1.633 -0.125
Br5 0.000 -1.633 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09921.09921.95001.9500
H21.09921.83052.51152.5115
H31.09921.83052.51152.5115
Br41.95002.51152.51153.2667
Br51.95002.51152.51153.2667

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.753 H2 C1 Br4 107.607
H2 C1 Br5 107.607 H3 C1 Br4 107.607
H3 C1 Br5 107.607 Br4 C1 Br5 113.776
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363      
2 H -0.058      
3 H -0.058      
4 Br 0.240      
5 Br 0.240      


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 1.466 1.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.563 0.000 0.000
y 0.000 -44.840 0.000
z 0.000 0.000 -41.068
Traceless
 xyz
x -0.609 0.000 0.000
y 0.000 -2.524 0.000
z 0.000 0.000 3.133
Polar
3z2-r26.266
x2-y21.277
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.811 0.000 0.000
y 0.000 11.791 0.000
z 0.000 0.000 7.535


<r2> (average value of r2) Å2
<r2> 226.578
(<r2>)1/2 15.053