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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B2PLYP=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/3-21G*
 hartrees
Energy at 0K-5162.196079
Energy at 298.15K 
HF Energy-5162.071371
Nuclear repulsion energy349.993713
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 B2PLYP=FULL/3-21G*
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 3168 3168 2.88 82.71 0.09 0.17
2 A1 1515 1515 0.05 16.60 0.75 0.85
3 A1 595 595 4.51 13.69 0.10 0.18
4 A1 170 170 0.09 4.71 0.48 0.65
5 A2 1157 1157 0.00 11.20 0.75 0.86
6 B1 3252 3252 0.16 55.38 0.75 0.86
7 B1 835 835 6.77 3.06 0.75 0.86
8 B2 1263 1263 57.80 1.92 0.75 0.86
9 B2 662 662 80.55 6.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6308.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6308.9 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 B2PLYP=FULL/3-21G*
ABC
0.84292 0.04062 0.03905

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.960
H2 -0.901 0.000 1.564
H3 0.901 0.000 1.564
Br4 0.000 1.618 -0.127
Br5 0.000 -1.618 -0.127

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08441.08441.94941.9494
H21.08441.80172.50772.5077
H31.08441.80172.50772.5077
Br41.94942.50772.50773.2365
Br51.94942.50772.50773.2365

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.350 H2 C1 Br4 108.082
H2 C1 Br5 108.082 H3 C1 Br4 108.082
H3 C1 Br5 108.082 Br4 C1 Br5 112.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability