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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCSD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/6-311+G(3df,2p)
 hartrees
Energy at 0K-5184.323329
Energy at 298.15K 
HF Energy-5183.786977
Nuclear repulsion energy352.186878
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 CCSD/6-311+G(3df,2p)
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 3155 2976 1.54      
2 A1 1477 1393 0.00      
3 A1 603 569 3.09      
4 A1 177 167 0.08      
5 A2 1152 1087 0.00      
6 B1 3236 3052 2.04      
7 B1 838 790 3.43      
8 B2 1255 1183 61.41      
9 B2 693 654 67.25      

Unscaled Zero Point Vibrational Energy (zpe) 6292.9 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 5934.9 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 CCSD/6-311+G(3df,2p)
ABC
0.88278 0.04089 0.03937

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
H2 -0.895 0.000 1.540
H3 0.895 0.000 1.540
Br4 0.000 1.613 -0.124
Br5 0.000 -1.613 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08211.08211.92821.9282
H21.08211.79062.48452.4845
H31.08211.79062.48452.4845
Br41.92822.48452.48453.2261
Br51.92822.48452.48453.2261

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.663 H2 C1 Br4 107.922
H2 C1 Br5 107.922 H3 C1 Br4 107.922
H3 C1 Br5 107.922 Br4 C1 Br5 113.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability