return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/cc-pVDZ
 hartrees
Energy at 0K-5186.658976
Energy at 298.15K 
HF Energy-5186.519313
Nuclear repulsion energy348.921505
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/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 3154 3023 3.06 99.81 0.07 0.14
2 A1 1427 1368 0.19 11.58 0.73 0.84
3 A1 583 559 4.44 13.75 0.09 0.17
4 A1 172 165 0.07 5.55 0.48 0.65
5 A2 1114 1068 0.00 7.32 0.75 0.86
6 B1 3248 3114 0.85 58.66 0.75 0.86
7 B1 814 780 4.94 2.42 0.75 0.86
8 B2 1216 1166 70.48 0.35 0.75 0.86
9 B2 650 623 97.21 6.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6189.7 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 5932.9 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/cc-pVDZ
ABC
0.87706 0.04005 0.03859

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.934
H2 -0.906 0.000 1.545
H3 0.906 0.000 1.545
Br4 0.000 1.630 -0.124
Br5 0.000 -1.630 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09291.09291.94351.9435
H21.09291.81272.50302.5030
H31.09291.81272.50302.5030
Br41.94352.50302.50303.2597
Br51.94352.50302.50303.2597

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.057 H2 C1 Br4 107.721
H2 C1 Br5 107.721 H3 C1 Br4 107.721
H3 C1 Br5 107.721 Br4 C1 Br5 113.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability