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: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-5642.618099
Energy at 298.15K-5642.625016
HF Energy-5642.618099
Nuclear repulsion energy570.019784
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 BLYP/6-31G(2df,p)
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' 3103 3086 1.25      
2 A' 1161 1154 21.66      
3 A' 656 653 136.45      
4 A' 547 544 9.63      
5 A' 266 265 0.03      
6 A' 161 160 0.04      
7 A" 1126 1119 33.13      
8 A" 603 599 129.71      
9 A" 188 187 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 3905.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3883.6 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 BLYP/6-31G(2df,p)
ABC
0.08028 0.04061 0.02751

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.238 0.598 0.000
H2 -1.162 1.177 0.000
Cl3 1.130 1.772 0.000
Br4 -0.238 -0.498 1.610
Br5 -0.238 -0.498 -1.610

Atom - Atom Distances (Å)
  C1 H2 Cl3 Br4 Br5
C11.09021.80261.94761.9476
H21.09022.36802.50022.5002
Cl31.80262.36803.10123.1012
Br41.94762.50023.10123.2191
Br51.94762.50023.10123.2191

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 107.308 H2 C1 Br4 107.385
H2 C1 Br5 107.385 Cl3 C1 Br4 111.515
Cl3 C1 Br5 111.515 Br4 C1 Br5 111.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.281      
2 H 0.194      
3 Cl -0.076      
4 Br 0.081      
5 Br 0.081      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.895 0.328 0.000 0.953
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -54.055 -1.253 0.000
y -1.253 -53.901 0.000
z 0.000 0.000 -54.131
Traceless
 xyz
x -0.040 -1.253 0.000
y -1.253 0.193 0.000
z 0.000 0.000 -0.153
Polar
3z2-r2-0.306
x2-y2-0.155
xy-1.253
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.729 1.548 0.000
y 1.548 9.441 0.000
z 0.000 0.000 11.339


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000