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

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-5638.210788
Energy at 298.15K-5638.217905
HF Energy-5637.683757
Nuclear repulsion energy573.307529
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 QCISD/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' 3233 3079 0.66      
2 A' 1272 1212 26.50      
3 A' 797 759 100.66      
4 A' 576 549 6.92      
5 A' 286 273 0.18      
6 A' 176 168 0.02      
7 A" 1202 1144 40.40      
8 A" 679 647 93.57      
9 A" 209 199 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4215.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 4014.2 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 QCISD/6-31G*
ABC
0.08203 0.04090 0.02786

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.234 0.616 0.000
H2 -1.167 1.171 0.000
Cl3 1.114 1.751 0.000
Br4 -0.234 -0.495 1.604
Br5 -0.234 -0.495 -1.604

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.08591.76211.95081.9508
H21.08592.35362.49372.4937
Cl31.76212.35363.07123.0712
Br41.95082.49373.07123.2074
Br51.95082.49373.07123.2074

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 109.149 H2 C1 Br4 106.928
H2 C1 Br5 106.928 Cl3 C1 Br4 111.515
Cl3 C1 Br5 111.515 Br4 C1 Br5 110.583
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability