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: QCISD(T)=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-375.106557
Energy at 298.15K 
HF Energy-374.140554
Nuclear repulsion energy105.194127
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 QCISD(T)=FULL/Def2TZVPP
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' 3244 3244        
2 A' 3213 3213        
3 A' 3149 3149        
4 A' 1634 1634        
5 A' 1421 1421        
6 A' 1275 1275        
7 A' 1012 1012        
8 A' 561 561        
9 A' 310 310        
10 A" 985 985        
11 A" 934 934        
12 A" 557 557        

Unscaled Zero Point Vibrational Energy (zpe) 9145.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9145.7 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 QCISD(T)=FULL/Def2TZVPP
ABC
1.78154 0.10918 0.10288

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.469 -1.447 0.000
C2 -0.449 -2.413 0.000
I3 0.000 0.575 0.000
H4 1.528 -1.649 0.000
H5 -1.508 -2.204 0.000
H6 -0.137 -3.448 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.33232.07571.07872.11702.0908
C21.33233.02132.11981.07961.0816
I32.07573.02132.69853.16194.0256
H41.07872.11982.69853.08702.4515
H52.11701.07963.16193.08701.8520
H62.09081.08164.02562.45151.8520

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 122.391 C1 C2 H6 119.667
C2 C1 I3 123.405 C2 C1 H4 122.754
I3 C1 H4 113.841 H5 C2 H6 117.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability