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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-63.306175
Energy at 298.15K 
HF Energy-63.306175
Nuclear repulsion energy40.857013
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/SDD
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' 3355 3020 11.58 148.02 0.07 0.12
2 A' 1569 1412 1.78 25.81 0.51 0.67
3 A' 1335 1202 143.45 4.47 0.51 0.68
4 A' 646 582 97.28 29.77 0.72 0.84
5 A' 537 484 4.75 50.08 0.14 0.25
6 A' 154 139 0.04 11.63 0.58 0.74
7 A" 3461 3117 0.00 80.46 0.75 0.86
8 A" 1223 1101 0.03 14.20 0.75 0.86
9 A" 849 765 13.05 9.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6564.6 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 5910.7 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 HF/SDD
ABC
0.79626 0.02828 0.02745

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.101 0.000
Br2 1.938 0.705 0.000
I3 -1.271 -0.653 0.000
H4 -0.214 1.660 0.888
H5 -0.214 1.660 -0.888

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.97752.16651.07151.0715
Br21.97753.48462.51632.5163
I32.16653.48462.69442.6944
H41.07152.51632.69441.7769
H51.07152.51632.69441.7769

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.390 Br2 C1 H4 107.479
Br2 C1 H5 107.479 I3 C1 H4 107.780
I3 C1 H5 107.780 H4 C1 H5 112.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.836      
2 Br 0.060      
3 I 0.172      
4 H 0.302      
5 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.141 1.430 0.000 1.829
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.351 -0.854 0.000
y -0.854 -39.674 0.000
z 0.000 0.000 -42.872
Traceless
 xyz
x -4.079 -0.854 0.000
y -0.854 4.438 0.000
z 0.000 0.000 -0.359
Polar
3z2-r2-0.719
x2-y2-5.678
xy-0.854
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.785 2.825 0.000
y 2.825 5.793 0.000
z 0.000 0.000 2.424


<r2> (average value of r2) Å2
<r2> 85.148
(<r2>)1/2 9.228