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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-47.151463
Energy at 298.15K-47.158451
HF Energy-46.952159
Nuclear repulsion energy53.057792
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/CEP-121G
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' 3148 3073 2.19      
2 A' 1215 1186 32.81      
3 A' 691 674 102.77      
4 A' 535 522 4.30      
5 A' 265 258 0.06      
6 A' 164 160 0.00      
7 A" 1199 1170 50.94      
8 A" 647 632 108.79      
9 A" 191 187 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 4027.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 3931.0 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 MP2/CEP-121G
ABC
0.07550 0.03800 0.02577

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 0.603 0.000
H2 -1.170 1.187 0.000
Cl3 1.167 1.830 0.000
Br4 -0.246 -0.513 1.664
Br5 -0.246 -0.513 -1.664

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.09311.87092.00412.0041
H21.09312.42392.55222.5522
Cl31.87092.42393.20233.2023
Br42.00412.55223.20233.3289
Br52.00412.55223.20233.3289

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 106.772 H2 C1 Br4 107.294
H2 C1 Br5 107.294 Cl3 C1 Br4 111.419
Cl3 C1 Br5 111.419 Br4 C1 Br5 112.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability