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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-6967.406365
Energy at 298.15K 
HF Energy-6967.406365
Nuclear repulsion energy186.333848
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' 3179 3150 2.75 75.44 0.52 0.68
2 A' 3158 3129 2.89 115.20 0.36 0.53
3 A' 3082 3054 0.19 150.93 0.20 0.33
4 A' 1620 1605 51.79 7.29 0.12 0.21
5 A' 1422 1409 13.22 21.28 0.40 0.57
6 A' 1262 1250 57.15 13.39 0.47 0.64
7 A' 1016 1007 8.97 7.02 0.72 0.83
8 A' 527 522 13.74 6.42 0.41 0.58
9 A' 309 306 0.25 9.77 0.52 0.68
10 A" 967 958 59.35 0.54 0.75 0.86
11 A" 924 915 30.36 0.61 0.75 0.86
12 A" 561 556 23.62 7.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9012.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 8930.5 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
1.75338 0.10322 0.09748

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 0.470 -1.508 0.000
C2 -0.451 -2.472 0.000
I3 0.000 0.592 0.000
H4 1.546 -1.693 0.000
H5 -1.524 -2.268 0.000
H6 -0.138 -3.522 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.33372.15141.09142.13472.1047
C21.33373.09672.14351.09251.0960
I32.15143.09672.75843.24084.1165
H41.09142.14352.75843.12362.4867
H52.13471.09253.24083.12361.8693
H62.10471.09604.11652.48671.8693

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 122.943 C1 C2 H6 119.728
C2 C1 I3 123.680 C2 C1 H4 123.925
I3 C1 H4 112.395 H5 C2 H6 117.329
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 -0.522      
2 C -0.371      
3 I 0.194      
4 H 0.254      
5 H 0.223      
6 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.155 -1.340 0.000 1.349
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.173 -0.532 0.000
y -0.532 -35.288 0.000
z 0.000 0.000 -43.368
Traceless
 xyz
x 0.155 -0.532 0.000
y -0.532 5.983 0.000
z 0.000 0.000 -6.138
Polar
3z2-r2-12.276
x2-y2-3.885
xy-0.532
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.473 0.376 0.000
y 0.376 9.883 0.000
z 0.000 0.000 2.116


<r2> (average value of r2) Å2
<r2> 121.087
(<r2>)1/2 11.004