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: CCSD(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 CCSD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-375.106104
Energy at 298.15K 
HF Energy-374.140571
Nuclear repulsion energy105.211360
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 CCSD(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' 3246 3246        
2 A' 3214 3214        
3 A' 3150 3150        
4 A' 1636 1636        
5 A' 1421 1421        
6 A' 1276 1276        
7 A' 1014 1014        
8 A' 562 562        
9 A' 310 310        
10 A" 986 986        
11 A" 936 936        
12 A" 559 559        

Unscaled Zero Point Vibrational Energy (zpe) 9154.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9154.9 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 CCSD(T)=FULL/Def2TZVPP
ABC
1.78206 0.10922 0.10291

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(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
C11.33202.07541.07862.11662.0905
C21.33203.02082.11941.07951.0815
I32.07543.02082.69843.16124.0250
H41.07862.11942.69843.08652.4510
H52.11661.07953.16123.08651.8518
H62.09051.08154.02502.45101.8518

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 122.386 C1 C2 H6 119.672
C2 C1 I3 123.403 C2 C1 H4 122.744
I3 C1 H4 113.853 H5 C2 H6 117.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability