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 CH2BrCl (Methane, bromochloro-)

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-3056.152121
Energy at 298.15K-3056.157405
HF Energy-3056.152121
Nuclear repulsion energy212.796402
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 HF/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' 3352 3035 2.27      
2 A' 1588 1438 0.21      
3 A' 1367 1238 76.95      
4 A' 718 650 124.06      
5 A' 624 565 14.08      
6 A' 229 207 0.73      
7 A" 3450 3124 1.39      
8 A" 1246 1129 0.03      
9 A" 898 813 4.58      

Unscaled Zero Point Vibrational Energy (zpe) 6735.4 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 6099.6 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 HF/3-21G
ABC
0.91841 0.06662 0.06286

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.049 0.000
Br2 0.888 -0.706 0.000
Cl3 -1.860 0.898 0.000
H4 0.265 1.573 0.894
H5 0.265 1.573 -0.894

Atom - Atom Distances (Å)
  C1 Br2 Cl3 H4 H5
C11.96641.86571.06991.0699
Br21.96643.18152.52602.5260
Cl31.86573.18152.40232.4023
H41.06992.52602.40231.7875
H51.06992.52602.40231.7875

picture of Methane, bromochloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Cl3 112.216 Br2 C1 H4 108.997
Br2 C1 H5 108.997 Cl3 C1 H4 106.675
Cl3 C1 H5 106.675 H4 C1 H5 113.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.777      
2 Br 0.133      
3 Cl -0.004      
4 H 0.324      
5 H 0.324      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.735 1.472 0.000 2.275
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.840 1.949 0.000
y 1.949 -35.595 0.000
z 0.000 0.000 -37.568
Traceless
 xyz
x -5.259 1.949 0.000
y 1.949 4.109 0.000
z 0.000 0.000 1.150
Polar
3z2-r22.300
x2-y2-6.245
xy1.949
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.202 -1.769 0.000
y -1.769 4.715 0.000
z 0.000 0.000 2.171


<r2> (average value of r2) Å2
<r2> 154.765
(<r2>)1/2 12.440