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=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-3056.339103
Energy at 298.15K-3056.344290
HF Energy-3056.151428
Nuclear repulsion energy210.104182
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=FULL/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 3067 2.69      
2 A' 1521 1452 0.49      
3 A' 1289 1231 51.25      
4 A' 670 639 88.33      
5 A' 585 559 7.87      
6 A' 212 202 0.56      
7 A" 3305 3156 0.01      
8 A" 1168 1115 0.03      
9 A" 844 806 4.91      

Unscaled Zero Point Vibrational Energy (zpe) 6403.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 6113.8 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=FULL/3-21G
ABC
0.90234 0.06476 0.06115

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 -0.711 0.000
Cl3 -1.891 0.905 0.000
H4 0.264 1.587 0.905
H5 0.264 1.587 -0.905

Atom - Atom Distances (Å)
  C1 Br2 Cl3 H4 H5
C11.98311.89661.08301.0830
Br21.98313.22792.55152.5515
Cl31.89663.22792.43492.4349
H41.08302.55152.43491.8098
H51.08302.55152.43491.8098

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 112.586 Br2 C1 H4 109.084
Br2 C1 H5 109.084 Cl3 C1 H4 106.383
Cl3 C1 H5 106.383 H4 C1 H5 113.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability