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

using model chemistry: PBEPBE/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 PBEPBE/3-21G*
 hartrees
Energy at 0K-6967.478646
Energy at 298.15K 
HF Energy-6967.478646
Nuclear repulsion energy187.270510
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/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' 3177 3029 2.23 76.88 0.60 0.75
2 A' 3144 2998 3.19 106.08 0.30 0.47
3 A' 3081 2937 0.15 146.97 0.21 0.35
4 A' 1609 1534 42.50 6.58 0.12 0.21
5 A' 1418 1352 12.93 24.39 0.43 0.60
6 A' 1261 1202 47.55 10.36 0.32 0.49
7 A' 1013 966 8.80 4.67 0.67 0.80
8 A' 540 515 12.18 5.22 0.15 0.26
9 A' 305 291 0.21 8.14 0.41 0.59
10 A" 961 917 47.27 0.24 0.75 0.86
11 A" 915 873 30.97 0.24 0.75 0.86
12 A" 548 523 22.02 10.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8985.4 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 8567.6 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/3-21G*
ABC
1.75142 0.10438 0.09851

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.471 -1.494 0.000
C2 -0.451 -2.461 0.000
I3 0.000 0.588 0.000
H4 1.548 -1.679 0.000
H5 -1.524 -2.255 0.000
H6 -0.141 -3.512 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.33632.13471.09242.13542.1088
C21.33633.08252.14661.09251.0960
I32.13473.08252.74473.22604.1028
H41.09242.14662.74473.12552.4925
H52.13541.09253.22603.12551.8694
H62.10881.09604.10282.49251.8694

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 122.766 C1 C2 H6 119.897
C2 C1 I3 123.620 C2 C1 H4 123.910
I3 C1 H4 112.470 H5 C2 H6 117.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.358      
2 C -0.402      
3 I 0.073      
4 H 0.242      
5 H 0.225      
6 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.128 -1.261 0.000 1.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.104 -0.706 0.000
y -0.706 -34.859 0.000
z 0.000 0.000 -43.278
Traceless
 xyz
x -0.036 -0.706 0.000
y -0.706 6.332 0.000
z 0.000 0.000 -6.296
Polar
3z2-r2-12.592
x2-y2-4.245
xy-0.706
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.906 0.558 0.000
y 0.558 10.605 0.000
z 0.000 0.000 3.854


<r2> (average value of r2) Å2
<r2> 120.007
(<r2>)1/2 10.955