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 CH2BrI (bromoiodomethane)

using model chemistry: M06-2X/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at M06-2X/STO-3G
 hartrees
Energy at 0K-9437.950329
Energy at 298.15K 
HF Energy-9437.950329
Nuclear repulsion energy463.044501
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 M06-2X/STO-3G
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' 3404 3404 0.35 40.27 0.12 0.22
2 A' 1646 1646 0.20 17.68 0.71 0.83
3 A' 1349 1349 72.11 2.05 0.65 0.79
4 A' 779 779 54.87 8.83 0.75 0.86
5 A' 611 611 10.22 15.51 0.19 0.32
6 A' 158 158 0.55 4.61 0.53 0.70
7 A" 3523 3523 0.09 32.20 0.75 0.86
8 A" 1262 1262 0.00 14.35 0.75 0.86
9 A" 851 851 0.19 2.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6791.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6791.1 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 M06-2X/STO-3G
ABC
0.86060 0.02880 0.02802

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.053 0.000
Br2 1.895 0.760 0.000
I3 -1.241 -0.683 0.000
H4 -0.257 1.645 0.889
H5 -0.257 1.645 -0.889

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.91722.13451.09831.0983
Br21.91723.45212.49072.4907
I32.13453.45212.67962.6796
H41.09832.49072.67961.7771
H51.09832.49072.67961.7771

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 116.762 Br2 C1 H4 108.292
Br2 C1 H5 108.292 I3 C1 H4 107.604
I3 C1 H5 107.604 H4 C1 H5 107.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.275      
2 Br 0.013      
3 I 0.044      
4 H 0.109      
5 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.414 1.395 0.000 1.455
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.546 -1.256 0.000
y -1.256 -47.752 0.000
z 0.000 0.000 -48.960
Traceless
 xyz
x -3.190 -1.256 0.000
y -1.256 2.501 0.000
z 0.000 0.000 0.689
Polar
3z2-r21.378
x2-y2-3.794
xy-1.256
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.797 1.622 0.000
y 1.622 2.953 0.000
z 0.000 0.000 1.037


<r2> (average value of r2) Å2
<r2> 296.902
(<r2>)1/2 17.231