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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-31.651095
Energy at 298.15K 
HF Energy-31.651095
Nuclear repulsion energy31.308736
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/CEP-121G
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' 3103 3024 8.58 112.23 0.07 0.13
2 A' 1422 1386 0.29 28.48 0.54 0.70
3 A' 1210 1179 103.39 2.32 0.43 0.60
4 A' 577 562 121.44 12.08 0.61 0.76
5 A' 495 483 7.73 25.50 0.20 0.33
6 A' 139 135 0.02 12.12 0.54 0.70
7 A" 3216 3134 1.29 61.59 0.75 0.86
8 A" 1095 1067 0.01 23.90 0.75 0.86
9 A" 776 756 18.12 8.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6016.4 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 5863.0 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/CEP-121G
ABC
0.79367 0.02738 0.02661

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.100 0.000
Br2 1.970 0.718 0.000
I3 -1.292 -0.661 0.000
H4 -0.215 1.662 0.906
H5 -0.215 1.662 -0.906

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C12.00632.18491.08761.0876
Br22.00633.54162.54692.5469
I32.18493.54162.71652.7165
H41.08762.54692.71651.8119
H51.08762.54692.71651.8119

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 115.278 Br2 C1 H4 107.035
Br2 C1 H5 107.035 I3 C1 H4 107.419
I3 C1 H5 107.419 H4 C1 H5 112.811
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.791      
2 Br 0.103      
3 I 0.178      
4 H 0.255      
5 H 0.255      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.984 1.372 0.000 1.688
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.778 -0.493 0.000
y -0.493 -39.258 0.000
z 0.000 0.000 -42.372
Traceless
 xyz
x -2.963 -0.493 0.000
y -0.493 3.817 0.000
z 0.000 0.000 -0.854
Polar
3z2-r2-1.707
x2-y2-4.520
xy-0.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.917 2.814 0.000
y 2.814 5.804 0.000
z 0.000 0.000 2.536


<r2> (average value of r2) Å2
<r2> 83.727
(<r2>)1/2 9.150