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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: B3LYP/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 B3LYP/Def2TZVPP
 hartrees
Energy at 0K-2911.307202
Energy at 298.15K 
HF Energy-2911.307202
Nuclear repulsion energy259.030315
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 B3LYP/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' 3136 3019 0.70 95.29 0.06 0.11
2 A' 1426 1373 0.10 16.03 0.55 0.71
3 A' 1179 1135 85.16 2.39 0.28 0.43
4 A' 609 586 78.99 6.37 0.73 0.84
5 A' 515 496 6.83 20.17 0.13 0.23
6 A' 140 135 0.06 5.34 0.39 0.56
7 A" 3224 3104 2.73 46.69 0.75 0.86
8 A" 1089 1048 0.00 1.43 0.75 0.86
9 A" 763 735 6.04 0.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6040.6 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 5814.7 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 B3LYP/Def2TZVPP
ABC
0.82186 0.02876 0.02794

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.085 0.000
Br2 1.909 0.727 0.000
I3 -1.252 -0.665 0.000
H4 -0.231 1.642 0.897
H5 -0.231 1.642 -0.897

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.94272.15181.08061.0806
Br21.94273.45452.49462.4946
I32.15183.45452.67712.6771
H41.08062.49462.67711.7938
H51.08062.49462.67711.7938

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.973 Br2 C1 H4 107.769
Br2 C1 H5 107.769 I3 C1 H4 107.123
I3 C1 H5 107.123 H4 C1 H5 112.192
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 Br -0.073      
3 I -0.009      
4 H 0.192      
5 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.706 1.146 0.000 1.346
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.153 -0.410 0.000
y -0.410 -49.221 0.000
z 0.000 0.000 -52.221
Traceless
 xyz
x -2.432 -0.410 0.000
y -0.410 3.466 0.000
z 0.000 0.000 -1.035
Polar
3z2-r2-2.069
x2-y2-3.932
xy-0.410
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.201 2.230 0.000
y 2.230 8.945 0.000
z 0.000 0.000 6.853


<r2> (average value of r2) Å2
<r2> 242.721
(<r2>)1/2 15.580