return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHClBr2 (Methane, dibromochloro-)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-5637.594706
Energy at 298.15K-5637.601668
HF Energy-5637.379088
Nuclear repulsion energy558.511114
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 MP2/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3259 3118 0.13      
2 A' 1239 1186 21.92      
3 A' 681 652 102.12      
4 A' 533 510 4.59      
5 A' 265 253 0.12      
6 A' 164 157 0.04      
7 A" 1205 1153 34.91      
8 A" 644 616 88.72      
9 A" 192 184 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 4091.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 3914.3 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 MP2/6-31G
ABC
0.07659 0.03912 0.02643

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.250 0.612 0.000
H2 -1.159 1.204 0.000
Cl3 1.185 1.798 0.000
Br4 -0.250 -0.506 1.640
Br5 -0.250 -0.506 -1.640

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.08541.86161.98431.9843
H21.08542.41792.53792.5379
Cl31.86162.41793.17103.1710
Br41.98432.53793.17103.2792
Br51.98432.53793.17103.2792

picture of Methane, dibromochloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Cl3 107.308 H2 C1 Br4 107.918
H2 C1 Br5 107.918 Cl3 C1 Br4 111.036
Cl3 C1 Br5 111.036 Br4 C1 Br5 111.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability