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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-5178.697916
Energy at 298.15K 
HF Energy-5178.521127
Nuclear repulsion energy342.912566
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 CISD/6-31G
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 3205 3005 3.97      
2 A1 1501 1408 0.11      
3 A1 545 511 5.43      
4 A1 168 157 0.12      
5 A2 1151 1079 0.00      
6 B1 3299 3094 0.02      
7 B1 832 780 6.77      
8 B2 1272 1193 64.00      
9 B2 618 580 71.20      

Unscaled Zero Point Vibrational Energy (zpe) 6295.2 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 5903.6 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 CISD/6-31G
ABC
0.82023 0.03888 0.03739

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.977
H2 -0.904 0.000 1.577
H3 0.904 0.000 1.577
Br4 0.000 1.654 -0.129
Br5 0.000 -1.654 -0.129

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08541.08541.98971.9897
H21.08541.80882.54232.5423
H31.08541.80882.54232.5423
Br41.98972.54232.54233.3086
Br51.98972.54232.54233.3086

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.871 H2 C1 Br4 107.889
H2 C1 Br5 107.889 H3 C1 Br4 107.889
H3 C1 Br5 107.889 Br4 C1 Br5 112.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability