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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: wB97X-D/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 wB97X-D/3-21G*
 hartrees
Energy at 0K-9491.906498
Energy at 298.15K 
HF Energy-9491.906498
Nuclear repulsion energy463.505626
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 wB97X-D/3-21G*
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' 3169 3004 0.32 80.22 0.09 0.17
2 A' 1494 1416 0.69 20.62 0.69 0.82
3 A' 1239 1174 58.28 2.43 0.19 0.32
4 A' 676 641 51.86 7.99 0.74 0.85
5 A' 555 526 3.20 19.90 0.13 0.23
6 A' 144 137 0.07 4.66 0.44 0.61
7 A" 3253 3084 2.84 55.18 0.75 0.86
8 A" 1144 1084 0.05 8.43 0.75 0.86
9 A" 787 746 9.98 2.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6230.6 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 5905.3 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 wB97X-D/3-21G*
ABC
0.78826 0.02924 0.02835

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.110 0.000
Br2 1.895 0.715 0.000
I3 -1.242 -0.661 0.000
H4 -0.229 1.677 0.899
H5 -0.229 1.677 -0.899

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.93542.16361.08661.0866
Br21.93543.42522.49852.4985
I32.16363.42522.70192.7019
H41.08662.49852.70191.7970
H51.08662.49852.70191.7970

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 113.247 Br2 C1 H4 108.233
Br2 C1 H5 108.233 I3 C1 H4 107.811
I3 C1 H5 107.811 H4 C1 H5 111.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.644      
2 Br -0.022      
3 I 0.079      
4 H 0.294      
5 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.587 1.213 0.000 1.348
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.434 -0.199 0.000
y -0.199 -49.661 0.000
z 0.000 0.000 -53.174
Traceless
 xyz
x -2.016 -0.199 0.000
y -0.199 3.643 0.000
z 0.000 0.000 -1.626
Polar
3z2-r2-3.253
x2-y2-3.773
xy-0.199
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.904 1.796 0.000
y 1.796 7.143 0.000
z 0.000 0.000 5.376


<r2> (average value of r2) Å2
<r2> 295.730
(<r2>)1/2 17.197