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

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-5615.827148
Energy at 298.15K-5615.834113
HF Energy-5615.608350
Nuclear repulsion energy554.350823
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' 3267 3118 0.19      
2 A' 1225 1169 20.12      
3 A' 665 635 102.08      
4 A' 526 502 2.44      
5 A' 260 248 0.22      
6 A' 164 156 0.01      
7 A" 1217 1162 36.05      
8 A" 690 659 84.57      
9 A" 188 180 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 4100.7 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 3914.2 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
0.07612 0.03822 0.02594

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 -0.253 0.582 0.000
H2 -1.142 1.198 0.000
Cl3 1.199 1.803 0.000
Br4 -0.253 -0.505 1.659
Br5 -0.253 -0.505 -1.659

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.08191.89681.98381.9838
H21.08192.41792.53882.5388
Cl31.89682.41793.19173.1917
Br41.98382.53883.19173.3190
Br51.98382.53883.19173.3190

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 105.221 H2 C1 Br4 108.185
H2 C1 Br5 108.185 Cl3 C1 Br4 110.648
Cl3 C1 Br5 110.648 Br4 C1 Br5 113.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability