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All results from a given calculation for C2H5I (Ethyl iodide)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.003281
HF Energy0.003281
Nuclear repulsion energy57.720329
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 PM3
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' 3176 3093 3.47 138.42 0.02 0.05
2 A' 3078 2998 4.78 153.98 0.53 0.69
3 A' 3060 2981 2.16 109.94 0.26 0.41
4 A' 1430 1393 6.33 71.78 0.38 0.55
5 A' 1403 1367 5.25 53.21 0.57 0.73
6 A' 1354 1318 29.16 31.57 0.51 0.68
7 A' 1245 1213 201.98 95.46 0.37 0.54
8 A' 1155 1125 7.32 16.12 0.67 0.80
9 A' 1005 979 20.48 29.27 0.53 0.69
10 A' 687 669 56.83 79.44 0.33 0.50
11 A' 354 345 0.44 7.50 0.65 0.79
12 A" 3084 3004 3.93 50.30 0.75 0.86
13 A" 3015 2937 3.06 93.35 0.75 0.86
14 A" 1389 1353 1.50 55.35 0.75 0.86
15 A" 1119 1090 0.51 10.69 0.75 0.86
16 A" 989 963 0.67 27.02 0.75 0.86
17 A" 822 801 1.44 6.00 0.75 0.86
18 A" 208 203 0.02 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14285.8 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 13914.3 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 PM3
ABC
0.92990 0.11455 0.10609

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.635 -1.343 0.000
C2 -0.594 -2.188 0.000
I3 0.000 0.592 0.000
H4 1.264 -1.485 0.895
H5 1.264 -1.485 -0.895
H6 -0.341 -3.258 0.000
H7 -1.214 -1.991 0.885
H8 -1.214 -1.991 -0.885

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.49132.03721.10331.10332.14862.14912.1491
C21.49132.84332.17942.17941.09901.09781.0978
I32.03722.84332.59112.59113.86512.98822.9882
H41.10332.17942.59111.78972.55372.52933.0925
H51.10332.17942.59111.78972.55373.09252.5293
H62.14861.09903.86512.55372.55371.77441.7744
H72.14911.09782.98822.52933.09251.77441.7691
H82.14911.09782.98823.09252.52931.77441.7691

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 111.189 C1 C2 H7 111.305
C1 C2 H8 111.305 C2 C1 I3 106.352
C2 C1 H4 113.436 C2 C1 H5 113.436
I3 C1 H4 107.432 I3 C1 H5 107.432
H4 C1 H5 108.405 H6 C2 H7 107.747
H6 C2 H8 107.747 H7 C2 H8 107.360
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability