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 CH2BrCl (Methane, bromochloro-)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-3056.329767
Energy at 298.15K-3056.334955
HF Energy-3056.151422
Nuclear repulsion energy210.082022
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 MP2/3-21G
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' 3212 3065 2.72      
2 A' 1521 1452 0.49      
3 A' 1290 1231 51.41      
4 A' 669 639 88.58      
5 A' 585 559 7.90      
6 A' 212 202 0.56      
7 A" 3304 3154 0.01      
8 A" 1169 1116 0.03      
9 A" 845 806 4.88      

Unscaled Zero Point Vibrational Energy (zpe) 6403.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 6111.9 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 MP2/3-21G
ABC
0.90249 0.06474 0.06113

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.054 0.000
Br2 0.903 -0.712 0.000
Cl3 -1.890 0.906 0.000
H4 0.265 1.587 0.905
H5 0.265 1.587 -0.905

Atom - Atom Distances (Å)
  C1 Br2 Cl3 H4 H5
C11.98361.89631.08311.0831
Br21.98363.22822.55182.5518
Cl31.89633.22822.43492.4349
H41.08312.55182.43491.8101
H51.08312.55182.43491.8101

picture of Methane, bromochloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Cl3 112.597 Br2 C1 H4 109.066
Br2 C1 H5 109.066 Cl3 C1 H4 106.395
Cl3 C1 H5 106.395 H4 C1 H5 113.353
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability