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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-9492.842101
Energy at 298.15K 
HF Energy-9492.842101
Nuclear repulsion energy464.861726
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 B1B95/3-21G*
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' 3166 3024 0.52 82.82 0.08 0.15
2 A' 1481 1414 0.27 19.51 0.70 0.82
3 A' 1217 1162 63.47 2.54 0.25 0.40
4 A' 662 633 63.39 6.51 0.74 0.85
5 A' 547 523 5.52 19.62 0.13 0.24
6 A' 140 134 0.04 5.15 0.44 0.61
7 A" 3254 3107 2.27 55.04 0.75 0.86
8 A" 1127 1077 0.06 8.28 0.75 0.86
9 A" 780 745 9.84 2.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6187.4 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 5908.3 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 B1B95/3-21G*
ABC
0.78815 0.02945 0.02854

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.112 0.000
Br2 1.887 0.715 0.000
I3 -1.237 -0.661 0.000
H4 -0.233 1.673 0.899
H5 -0.233 1.673 -0.899

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.92792.16221.08481.0848
Br21.92793.41342.49352.4935
I32.16223.41342.69582.6958
H41.08482.49352.69581.7974
H51.08482.49352.69581.7974

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 113.010 Br2 C1 H4 108.447
Br2 C1 H5 108.447 I3 C1 H4 107.558
I3 C1 H5 107.558 H4 C1 H5 111.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.645      
2 Br -0.015      
3 I 0.073      
4 H 0.293      
5 H 0.293      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.505 1.230 0.000 1.330
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.139 -0.201 0.000
y -0.201 -49.498 0.000
z 0.000 0.000 -52.976
Traceless
 xyz
x -1.902 -0.201 0.000
y -0.201 3.559 0.000
z 0.000 0.000 -1.657
Polar
3z2-r2-3.315
x2-y2-3.641
xy-0.201
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.970 1.852 0.000
y 1.852 7.157 0.000
z 0.000 0.000 5.346


<r2> (average value of r2) Å2
<r2> 293.885
(<r2>)1/2 17.143