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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: BLYP/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 BLYP/STO-3G
 hartrees
Energy at 0K-9437.390648
Energy at 298.15K 
HF Energy-9437.390648
Nuclear repulsion energy452.021213
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/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' 3224 2983 1.36 46.28 0.13 0.23
2 A' 1573 1455 0.32 17.78 0.71 0.83
3 A' 1278 1182 70.61 2.91 0.74 0.85
4 A' 699 647 75.65 6.07 0.75 0.86
5 A' 547 507 11.06 14.92 0.18 0.31
6 A' 153 142 0.43 6.06 0.51 0.67
7 A" 3344 3094 1.50 35.28 0.75 0.86
8 A" 1194 1105 0.00 12.72 0.75 0.86
9 A" 808 748 0.58 2.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6410.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 5930.7 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 BLYP/STO-3G
ABC
0.84190 0.02734 0.02662

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.070 0.000
Br2 1.936 0.800 0.000
I3 -1.268 -0.712 0.000
H4 -0.268 1.661 0.902
H5 -0.268 1.661 -0.902

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.95492.18721.11131.1113
Br21.95493.54312.53292.5329
I32.18723.54312.72862.7286
H41.11132.53292.72861.8038
H51.11132.53292.72861.8038

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 117.495 Br2 C1 H4 108.223
Br2 C1 H5 108.223 I3 C1 H4 107.062
I3 C1 H5 107.062 H4 C1 H5 108.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.265      
2 Br 0.024      
3 I 0.029      
4 H 0.106      
5 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.236 1.334 0.000 1.354
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.803 -0.997 0.000
y -0.997 -47.639 0.000
z 0.000 0.000 -48.988
Traceless
 xyz
x -2.489 -0.997 0.000
y -0.997 2.256 0.000
z 0.000 0.000 0.233
Polar
3z2-r20.465
x2-y2-3.164
xy-0.997
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.403 1.899 0.000
y 1.899 3.154 0.000
z 0.000 0.000 1.056


<r2> (average value of r2) Å2
<r2> 310.563
(<r2>)1/2 17.623