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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/daug-cc-pVTZ
 hartrees
Energy at 0K-5184.637957
Energy at 298.15K 
HF Energy-5183.964406
Nuclear repulsion energy353.955312
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 CCD/daug-cc-pVTZ
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 3169 3169 1.45      
2 A1 1479 1479 0.00      
3 A1 611 611 3.14      
4 A1 178 178 0.09      
5 A2 1157 1157 0.00      
6 B1 3247 3247 2.24      
7 B1 843 843 3.26      
8 B2 1255 1255 59.44      
9 B2 707 707 63.28      

Unscaled Zero Point Vibrational Energy (zpe) 6323.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6323.4 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 CCD/daug-cc-pVTZ
ABC
0.88880 0.04133 0.03979

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.929
H2 -0.894 0.000 1.536
H3 0.894 0.000 1.536
Br4 0.000 1.604 -0.123
Br5 0.000 -1.604 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08061.08061.91881.9188
H21.08061.78852.47522.4752
H31.08061.78852.47522.4752
Br41.91882.47522.47523.2088
Br51.91882.47522.47523.2088

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.690 H2 C1 Br4 107.935
H2 C1 Br5 107.935 H3 C1 Br4 107.935
H3 C1 Br5 107.935 Br4 C1 Br5 113.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability