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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: PBEPBE/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 PBEPBE/STO-3G
 hartrees
Energy at 0K-9436.552477
Energy at 298.15K 
HF Energy-9436.552477
Nuclear repulsion energy455.764494
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 PBEPBE/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' 3267 2985 0.71 42.91 0.13 0.23
2 A' 1576 1439 0.11 16.99 0.71 0.83
3 A' 1285 1174 64.52 3.20 0.73 0.85
4 A' 731 668 78.25 5.75 0.75 0.85
5 A' 566 517 11.08 13.74 0.18 0.30
6 A' 157 144 0.51 5.76 0.51 0.68
7 A" 3388 3096 0.35 33.04 0.75 0.86
8 A" 1205 1101 0.00 12.21 0.75 0.86
9 A" 817 746 0.63 2.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6496.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 5934.9 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 PBEPBE/STO-3G
ABC
0.85532 0.02780 0.02707

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.061 0.000
Br2 1.918 0.797 0.000
I3 -1.256 -0.709 0.000
H4 -0.272 1.650 0.900
H5 -0.272 1.650 -0.900

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.93612.17041.10911.1091
Br21.93613.51342.51632.5163
I32.17043.51342.70962.7096
H41.10912.51632.70961.7995
H51.10912.51632.70961.7995

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 117.533 Br2 C1 H4 108.367
Br2 C1 H5 108.367 I3 C1 H4 106.921
I3 C1 H5 106.921 H4 C1 H5 108.441
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.274      
2 Br 0.023      
3 I 0.021      
4 H 0.115      
5 H 0.115      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.229 1.439 0.000 1.457
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.019 -1.122 0.000
y -1.122 -47.601 0.000
z 0.000 0.000 -48.929
Traceless
 xyz
x -2.754 -1.122 0.000
y -1.122 2.373 0.000
z 0.000 0.000 0.381
Polar
3z2-r20.761
x2-y2-3.418
xy-1.122
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.190 1.826 0.000
y 1.826 3.052 0.000
z 0.000 0.000 1.034


<r2> (average value of r2) Å2
<r2> 305.959
(<r2>)1/2 17.492