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 C2H3I (Vinyl iodide)

using model chemistry: CCD/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/cc-pVTZ-PP
 hartrees
Energy at 0K-372.694864
Energy at 298.15K 
HF Energy-372.140605
Nuclear repulsion energy105.035448
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 CCD/cc-pVTZ-PP
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' 3271 3271 2.00      
2 A' 3241 3241 4.34      
3 A' 3174 3174 0.94      
4 A' 1680 1680 27.46      
5 A' 1436 1436 11.30      
6 A' 1291 1291 42.45      
7 A' 1026 1026 3.53      
8 A' 572 572 6.64      
9 A' 315 315 0.23      
10 A" 1004 1004 33.58      
11 A" 965 965 21.50      
12 A" 564 564 16.55      

Unscaled Zero Point Vibrational Energy (zpe) 9268.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9268.9 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 CCD/cc-pVTZ-PP
ABC
1.78927 0.10864 0.10242

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.467 -1.456 0.000
C2 -0.448 -2.416 0.000
I3 0.000 0.576 0.000
H4 1.527 -1.657 0.000
H5 -1.507 -2.208 0.000
H6 -0.135 -3.452 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.32572.08551.07892.11212.0843
C21.32573.02572.11501.07991.0820
I32.08553.02572.70573.16574.0304
H41.07892.11502.70573.08332.4453
H52.11211.07993.16573.08331.8526
H62.08431.08204.03042.44531.8526

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 122.477 C1 C2 H6 119.574
C2 C1 I3 123.457 C2 C1 H4 122.855
I3 C1 H4 113.689 H5 C2 H6 117.949
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability