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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCSD/cc-pVTZ-PP

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/cc-pVTZ-PP
 hartrees
Energy at 0K-870.704332
Energy at 298.15K 
HF Energy-870.053888
Nuclear repulsion energy213.099089
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/cc-pVTZ-PP
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 3162 3016 2.65      
2 A1 1463 1395 0.10      
3 A1 604 577 3.34      
4 A1 176 167 0.08      
5 A2 1136 1084 0.00      
6 B1 3243 3094 0.85      
7 B1 832 794 3.73      
8 B2 1241 1184 65.59      
9 B2 695 663 68.08      

Unscaled Zero Point Vibrational Energy (zpe) 6276.1 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 5987.4 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/cc-pVTZ-PP
ABC
0.88524 0.04124 0.03970

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ-PP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.931
H2 -0.895 0.000 1.537
H3 0.895 0.000 1.537
Br4 0.000 1.606 -0.124
Br5 0.000 -1.606 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08071.08071.92171.9217
H21.08071.78972.47782.4778
H31.08071.78972.47782.4778
Br41.92172.47782.47783.2123
Br51.92172.47782.47783.2123

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.796 H2 C1 Br4 107.929
H2 C1 Br5 107.929 H3 C1 Br4 107.929
H3 C1 Br5 107.929 Br4 C1 Br5 113.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability