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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-6965.074525
Energy at 298.15K 
HF Energy-6964.860840
Nuclear repulsion energy186.215277
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 MP2/3-21G
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' 3277 3128 4.38 72.56 0.55 0.71
2 A' 3249 3101 4.75 107.99 0.32 0.48
3 A' 3182 3038 1.34 121.35 0.19 0.31
4 A' 1656 1580 22.55 9.22 0.75 0.86
5 A' 1495 1427 20.21 9.86 0.46 0.63
6 A' 1340 1279 53.14 12.75 0.43 0.60
7 A' 1084 1034 4.69 6.58 0.74 0.85
8 A' 546 521 6.35 9.07 0.43 0.60
9 A' 320 305 0.10 8.24 0.51 0.68
10 A" 1042 994 52.17 0.64 0.75 0.86
11 A" 1000 954 25.54 0.13 0.75 0.86
12 A" 584 557 19.87 7.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9386.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 8959.5 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 MP2/3-21G
ABC
1.77982 0.10276 0.09715

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.468 -1.507 0.000
C2 -0.448 -2.480 0.000
I3 0.000 0.593 0.000
H4 1.532 -1.708 0.000
H5 -1.513 -2.281 0.000
H6 -0.139 -3.522 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.33582.15131.08322.12692.1040
C21.33583.10532.12441.08401.0866
I32.15133.10532.76463.24854.1170
H41.08322.12442.76463.09862.4654
H52.12691.08403.24853.09861.8514
H62.10401.08664.11702.46541.8514

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 122.699 C1 C2 H6 120.238
C2 C1 I3 124.203 C2 C1 H4 122.519
I3 C1 H4 113.278 H5 C2 H6 117.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability