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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-2910.594728
Energy at 298.15K 
HF Energy-2910.293347
Nuclear repulsion energy260.786383
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 B2PLYP/Def2TZVPP
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' 3154 3154 0.77 94.59 0.06 0.11
2 A' 1439 1439 0.13 15.18 0.56 0.72
3 A' 1189 1189 83.40 2.18 0.28 0.43
4 A' 636 636 67.97 6.69 0.73 0.85
5 A' 530 530 4.57 19.02 0.13 0.22
6 A' 143 143 0.07 4.69 0.39 0.56
7 A" 3243 3243 2.80 46.21 0.75 0.86
8 A" 1101 1101 0.00 1.56 0.75 0.86
9 A" 773 773 5.84 0.89 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6104.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6104.1 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 B2PLYP/Def2TZVPP
ABC
0.82117 0.02925 0.02840

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.083 0.000
Br2 1.897 0.712 0.000
I3 -1.244 -0.655 0.000
H4 -0.229 1.642 0.896
H5 -0.229 1.642 -0.896

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.93322.13741.07981.0798
Br21.93323.42552.48722.4872
I32.13743.42552.66562.6656
H41.07982.48722.66561.7912
H51.07982.48722.66561.7912

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.511 Br2 C1 H4 107.894
Br2 C1 H5 107.894 I3 C1 H4 107.280
I3 C1 H5 107.280 H4 C1 H5 112.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 Br -0.068      
3 I -0.004      
4 H 0.181      
5 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.699 1.150 0.000 1.346
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.205 -0.410 0.002
y -0.410 -49.272 -0.007
z 0.002 -0.007 -52.270
Traceless
 xyz
x -2.434 -0.410 0.002
y -0.410 3.465 -0.007
z 0.002 -0.007 -1.031
Polar
3z2-r2-2.062
x2-y2-3.933
xy-0.410
xz0.002
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.844 2.089 -0.001
y 2.089 8.755 0.000
z -0.001 0.000 6.747


<r2> (average value of r2) Å2
<r2> 239.462
(<r2>)1/2 15.475