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

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-6965.102889
Energy at 298.15K 
HF Energy-6964.860370
Nuclear repulsion energy185.607509
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/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' 3216 3117 8.13      
2 A' 3198 3099 3.41      
3 A' 3127 3030 2.48      
4 A' 1651 1600 20.77      
5 A' 1476 1431 16.68      
6 A' 1318 1278 54.47      
7 A' 1070 1037 3.41      
8 A' 534 517 6.56      
9 A' 315 305 0.08      
10 A" 1011 980 51.10      
11 A" 983 953 19.13      
12 A" 571 554 18.25      

Unscaled Zero Point Vibrational Energy (zpe) 9234.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8950.0 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/3-21G
ABC
1.76872 0.10211 0.09654

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.469 -1.514 0.000
C2 -0.448 -2.487 0.000
I3 0.000 0.595 0.000
H4 1.537 -1.712 0.000
H5 -1.518 -2.287 0.000
H6 -0.143 -3.534 0.000

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6
C11.33752.16011.08632.13232.1110
C21.33753.11402.13141.08801.0906
I32.16013.11402.77213.25714.1312
H41.08632.13142.77213.10882.4786
H52.13231.08803.25713.10881.8558
H62.11101.09064.13122.47861.8558

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 122.737 C1 C2 H6 120.442
C2 C1 I3 124.137 C2 C1 H4 122.800
I3 C1 H4 113.063 H5 C2 H6 116.822
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability