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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: HF/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 HF/Def2TZVPP
 hartrees
Energy at 0K-2908.113547
Energy at 298.15K 
HF Energy-2908.113547
Nuclear repulsion energy261.964386
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 HF/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' 3292 2984 2.02 90.62 0.07 0.14
2 A' 1558 1412 0.27 17.22 0.50 0.67
3 A' 1302 1180 114.05 6.83 0.44 0.61
4 A' 694 629 68.51 13.78 0.75 0.85
5 A' 564 512 3.89 32.22 0.15 0.26
6 A' 155 141 0.15 4.47 0.38 0.55
7 A" 3379 3063 2.28 48.07 0.75 0.86
8 A" 1201 1088 0.00 1.45 0.75 0.86
9 A" 834 756 5.46 0.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6489.3 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 5881.9 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 HF/Def2TZVPP
ABC
0.82850 0.02951 0.02865

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.078 0.000
Br2 1.889 0.707 0.000
I3 -1.239 -0.651 0.000
H4 -0.225 1.638 0.886
H5 -0.225 1.638 -0.886

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.92532.12741.07151.0715
Br21.92533.41032.47402.4740
I32.12743.41032.65522.6552
H41.07152.47402.65521.7719
H51.07152.47402.65521.7719

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.503 Br2 C1 H4 107.862
Br2 C1 H5 107.862 I3 C1 H4 107.567
I3 C1 H5 107.567 H4 C1 H5 111.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.184      
2 Br -0.093      
3 I -0.022      
4 H 0.150      
5 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.798 1.326 0.000 1.548
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.911 -0.576 0.000
y -0.576 -49.294 0.000
z 0.000 0.000 -52.451
Traceless
 xyz
x -3.038 -0.576 0.000
y -0.576 3.887 0.000
z 0.000 0.000 -0.849
Polar
3z2-r2-1.697
x2-y2-4.617
xy-0.576
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.490 2.002 0.000
y 2.002 8.572 0.000
z 0.000 0.000 6.610


<r2> (average value of r2) Å2
<r2> 237.813
(<r2>)1/2 15.421