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 C2H5I (Ethyl iodide)

using model chemistry: MP4=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 MP4=FULL/Def2TZVPP
 hartrees
Energy at 0K-376.349383
Energy at 298.15K 
HF Energy-375.339479
Nuclear repulsion energy121.659521
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 MP4=FULL/Def2TZVPP
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/Def2TZVPP
ABC
0.98078 0.10073 0.09457

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.610 -1.417 0.000
C2 -0.581 -2.356 0.000
I3 0.000 0.632 0.000
H4 1.227 -1.532 0.885
H5 1.227 -1.532 -0.885
H6 -0.231 -3.390 0.000
H7 -1.200 -2.202 0.882
H8 -1.200 -2.202 -0.882

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51642.13781.08511.08512.14472.16102.1610
C21.51643.04352.17532.17531.09181.08821.0882
I32.13783.04352.64022.64024.02843.20123.2012
H41.08512.17532.64021.77032.52252.51823.0761
H51.08512.17532.64021.77032.52253.07612.5182
H62.14471.09184.02842.52252.52251.76851.7685
H72.16101.08823.20122.51823.07611.76851.7632
H82.16101.08823.20123.07612.51821.76851.7632

picture of Ethyl iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.552 C1 C2 H7 111.066
C1 C2 H8 111.066 C2 C1 I3 111.663
C2 C1 H4 112.414 C2 C1 H5 112.414
I3 C1 H4 105.283 I3 C1 H5 105.283
H4 C1 H5 109.308 H6 C2 H7 108.430
H6 C2 H8 108.430 H7 C2 H8 108.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability