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 CHClBr2 (Methane, dibromochloro-)

using model chemistry: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-5643.269944
Energy at 298.15K-5643.277060
HF Energy-5642.698714
Nuclear repulsion energy571.670871
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3205 3075 0.13      
2 A' 1228 1178 24.58      
3 A' 777 746 106.39      
4 A' 575 551 5.26      
5 A' 284 272 0.07      
6 A' 171 164 0.01      
7 A" 1188 1140 41.72      
8 A" 691 663 98.05      
9 A" 205 197 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 4161.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3992.9 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 QCISD/cc-pVDZ
ABC
0.08172 0.04057 0.02766

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.234 0.600 0.000
H2 -1.172 1.167 0.000
Cl3 1.115 1.758 0.000
Br4 -0.234 -0.495 1.611
Br5 -0.234 -0.495 -1.611

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.09591.77821.94751.9475
H21.09592.36192.49722.4972
Cl31.77822.36193.08083.0808
Br41.94752.49723.08083.2211
Br51.94752.49723.08083.2211

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 108.173 H2 C1 Br4 106.919
H2 C1 Br5 106.919 Cl3 C1 Br4 111.484
Cl3 C1 Br5 111.484 Br4 C1 Br5 111.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability