return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2ClI (chloroiodomethane)

using model chemistry: B2PLYP/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 B2PLYP/STO-3G
 hartrees
Energy at 0K-7346.124511
Energy at 298.15K 
HF Energy-7346.097221
Nuclear repulsion energy283.944194
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 B2PLYP/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' 3376 3376 0.16 41.55 0.14 0.24
2 A' 1623 1623 0.90 15.99 0.72 0.83
3 A' 1352 1352 63.42 1.76 0.72 0.84
4 A' 847 847 65.47 10.09 0.49 0.66
5 A' 625 625 12.63 13.84 0.22 0.36
6 A' 211 211 1.30 5.83 0.56 0.72
7 A" 3503 3503 0.10 33.28 0.75 0.86
8 A" 1251 1251 0.15 13.51 0.75 0.86
9 A" 864 864 0.01 2.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6826.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6826.0 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 B2PLYP/STO-3G
ABC
0.91258 0.05115 0.04889

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.801 -1.048 0.000
Cl2 -0.450 -2.400 0.000
I3 0.000 0.934 0.000
H4 1.423 -1.197 0.901
H5 1.423 -1.197 -0.901

Atom - Atom Distances (Å)
  C1 Cl2 I3 H4 H5
C11.84202.13751.10461.1046
Cl21.84203.36422.40142.4014
I32.13753.36422.71562.7156
H41.10462.40142.71561.8016
H51.10462.40142.71561.8016

picture of chloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 I3 115.220 Cl2 C1 H4 106.468
Cl2 C1 H5 106.468 I3 C1 H4 109.614
I3 C1 H5 109.614 H4 C1 H5 109.274
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.180      
2 Cl -0.137      
3 I 0.085      
4 H 0.116      
5 H 0.116      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.827 0.527 0.000 1.902
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.014 -2.762 -0.007
y -2.762 -48.208 0.006
z -0.007 0.006 -44.012
Traceless
 xyz
x 3.096 -2.762 -0.007
y -2.762 -4.695 0.006
z -0.007 0.006 1.599
Polar
3z2-r23.198
x2-y25.194
xy-2.762
xz-0.007
yz0.006


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.903 -0.026 0.000
y -0.026 5.245 0.000
z 0.000 0.000 1.005


<r2> (average value of r2) Å2
<r2> 194.718
(<r2>)1/2 13.954