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All results from a given calculation for C2H3I (Vinyl iodide)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-6968.125296
Energy at 298.15K 
HF Energy-6968.125296
Nuclear repulsion energy186.560344
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3248 3134 4.21 72.57 0.42 0.59
2 A' 3230 3117 2.92 113.93 0.42 0.59
3 A' 3153 3042 0.60 149.64 0.20 0.34
4 A' 1673 1614 43.14 6.57 0.14 0.25
5 A' 1470 1418 14.46 21.78 0.41 0.59
6 A' 1304 1258 66.49 15.42 0.45 0.62
7 A' 1053 1016 6.39 7.00 0.73 0.84
8 A' 531 513 13.14 9.16 0.39 0.56
9 A' 316 305 0.22 10.37 0.51 0.67
10 A" 1007 972 54.83 0.87 0.75 0.86
11 A" 984 949 29.82 0.93 0.75 0.86
12 A" 577 557 22.17 7.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9272.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 8946.8 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/3-21G
ABC
1.78044 0.10330 0.09764

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.467 -1.511 0.000
C2 -0.447 -2.469 0.000
I3 0.000 0.592 0.000
H4 1.533 -1.696 0.000
H5 -1.512 -2.268 0.000
H6 -0.141 -3.512 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.32382.15441.08192.11882.0909
C21.32383.09292.12551.08361.0871
I32.15443.09292.75433.23494.1060
H41.08192.12552.75433.09822.4695
H52.11881.08363.23493.09821.8511
H62.09091.08714.10602.46951.8511

picture of Vinyl iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 123.010 C1 C2 H6 119.966
C2 C1 I3 123.796 C2 C1 H4 123.834
I3 C1 H4 112.370 H5 C2 H6 117.025
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.503      
2 C -0.348      
3 I 0.186      
4 H 0.242      
5 H 0.212      
6 H 0.210      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.149 -1.394 0.000 1.402
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.300 -0.503 0.000
y -0.503 -35.396 0.000
z 0.000 0.000 -43.340
Traceless
 xyz
x 0.069 -0.503 0.000
y -0.503 5.924 0.000
z 0.000 0.000 -5.992
Polar
3z2-r2-11.985
x2-y2-3.903
xy-0.503
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.404 0.391 0.000
y 0.391 9.699 0.000
z 0.000 0.000 2.054


<r2> (average value of r2) Å2
<r2> 120.924
(<r2>)1/2 10.997