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: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-5646.228167
Energy at 298.15K-5646.235121
HF Energy-5646.228167
Nuclear repulsion energy571.707557
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 PBEPBE/Def2TZVPP
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' 3106 3069 2.57      
2 A' 1161 1147 17.94      
3 A' 703 695 136.69      
4 A' 551 544 10.88      
5 A' 271 268 0.09      
6 A' 158 156 0.01      
7 A" 1114 1100 33.17      
8 A" 611 604 140.41      
9 A" 191 189 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 3933.3 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 3885.7 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 PBEPBE/Def2TZVPP
ABC
0.08205 0.04047 0.02764

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.229 0.598 0.000
H2 -1.169 1.148 0.000
Cl3 1.092 1.771 0.000
Br4 -0.229 -0.498 1.619
Br5 -0.229 -0.498 -1.619

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.08931.76661.95501.9550
H21.08932.34522.49292.4929
Cl31.76662.34523.08463.0846
Br41.95502.49293.08463.2376
Br51.95502.49293.08463.2376

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 108.047 H2 C1 Br4 106.451
H2 C1 Br5 106.451 Cl3 C1 Br4 111.859
Cl3 C1 Br5 111.859 Br4 C1 Br5 111.800
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.076      
2 H 0.191      
3 Cl -0.040      
4 Br -0.037      
5 Br -0.037      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.750 0.539 0.000 0.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -54.513 -0.930 0.000
y -0.930 -54.187 0.000
z 0.000 0.000 -54.786
Traceless
 xyz
x -0.026 -0.930 0.000
y -0.930 0.463 0.000
z 0.000 0.000 -0.437
Polar
3z2-r2-0.873
x2-y2-0.326
xy-0.930
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.799 1.531 0.000
y 1.531 9.661 0.000
z 0.000 0.000 11.836


<r2> (average value of r2) Å2
<r2> 315.591
(<r2>)1/2 17.765