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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: QCISD(T)=FULL/aug-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 QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-5184.303690
Energy at 298.15K 
HF Energy-5183.802960
Nuclear repulsion energy349.558431
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 QCISD(T)=FULL/aug-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 3127 3033        
2 A1 1418 1376        
3 A1 583 566        
4 A1 173 168        
5 A2 1117 1083        
6 B1 3217 3121        
7 B1 810 786        
8 B2 1210 1174        
9 B2 657 637        

Unscaled Zero Point Vibrational Energy (zpe) 6155.1 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 5971.0 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
0.85835 0.04038 0.03886

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.947
H2 -0.911 0.000 1.556
H3 0.911 0.000 1.556
Br4 0.000 1.623 -0.126
Br5 0.000 -1.623 -0.126

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09571.09571.94561.9456
H21.09571.82242.50832.5083
H31.09571.82242.50832.5083
Br41.94562.50832.50833.2463
Br51.94562.50832.50833.2463

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.525 H2 C1 Br4 107.831
H2 C1 Br5 107.831 H3 C1 Br4 107.831
H3 C1 Br5 107.831 Br4 C1 Br5 113.082
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability