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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCSD(T)/daug-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 CCSD(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-5184.286732
Energy at 298.15K 
HF Energy-5183.804032
Nuclear repulsion energy349.114588
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(T)/daug-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 3120 3120        
2 A1 1422 1422        
3 A1 583 583        
4 A1 173 173        
5 A2 1123 1123        
6 B1 3210 3210        
7 B1 815 815        
8 B2 1208 1208        
9 B2 657 657        

Unscaled Zero Point Vibrational Energy (zpe) 6155.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6155.2 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 CCSD(T)/daug-cc-pVDZ
ABC
0.86127 0.04023 0.03873

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.945
H2 -0.911 0.000 1.554
H3 0.911 0.000 1.554
Br4 0.000 1.626 -0.125
Br5 0.000 -1.626 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09641.09641.94671.9467
H21.09641.82252.50932.5093
H31.09641.82252.50932.5093
Br41.94672.50932.50933.2522
Br51.94672.50932.50933.2522

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.438 H2 C1 Br4 107.799
H2 C1 Br5 107.799 H3 C1 Br4 107.799
H3 C1 Br5 107.799 Br4 C1 Br5 113.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability