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

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-89.797284
Energy at 298.15K 
HF Energy-89.797284
Nuclear repulsion energy59.966050
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 HF/SDD
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' 3311 2982 51.35 141.50 0.05 0.10
2 A' 3284 2957 13.96 115.14 0.61 0.76
3 A' 3200 2882 42.84 209.98 0.08 0.14
4 A' 1648 1484 5.73 17.56 0.70 0.82
5 A' 1624 1463 4.45 16.07 0.58 0.74
6 A' 1573 1417 6.03 3.29 0.57 0.72
7 A' 1391 1253 133.27 26.84 0.45 0.62
8 A' 1165 1049 2.39 10.83 0.49 0.66
9 A' 1062 956 19.17 8.62 0.72 0.84
10 A' 508 457 28.77 63.53 0.32 0.49
11 A' 273 245 2.78 9.09 0.52 0.68
12 A" 3393 3055 14.17 64.62 0.75 0.86
13 A" 3316 2985 28.57 67.11 0.75 0.86
14 A" 1637 1474 11.22 19.91 0.75 0.86
15 A" 1383 1245 2.69 8.89 0.75 0.86
16 A" 1113 1002 0.83 7.23 0.75 0.86
17 A" 830 748 10.27 4.70 0.75 0.86
18 A" 263 237 0.03 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15487.3 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 13944.8 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 HF/SDD
ABC
0.97549 0.09526 0.08966

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.615 -1.474 0.000
C2 -0.584 -2.418 0.000
I3 0.000 0.651 0.000
H4 1.223 -1.574 0.882
H5 1.223 -1.574 -0.882
H6 -0.227 -3.443 0.000
H7 -1.201 -2.274 0.877
H8 -1.201 -2.274 -0.877

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52612.21171.07611.07612.14212.16992.1699
C21.52613.12342.18122.18121.08641.08171.0817
I32.21173.12342.68742.68744.10053.28133.2813
H41.07612.18122.68741.76422.52542.52373.0762
H51.07612.18122.68741.76422.52543.07622.5237
H62.14211.08644.10052.52542.52541.75661.7566
H72.16991.08173.28132.52373.07621.75661.7539
H82.16991.08173.28133.07622.52371.75661.7539

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 108.992 C1 C2 H7 111.482
C1 C2 H8 111.482 C2 C1 I3 112.055
C2 C1 H4 112.758 C2 C1 H5 112.758
I3 C1 H4 104.258 I3 C1 H5 104.258
H4 C1 H5 110.106 H6 C2 H7 108.225
H6 C2 H8 108.225 H7 C2 H8 108.329
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.619      
2 C -0.500      
3 I 0.030      
4 H 0.246      
5 H 0.246      
6 H 0.190      
7 H 0.204      
8 H 0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.460 -2.558 0.000 2.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.716 -1.428 0.000
y -1.428 -30.601 0.000
z 0.000 0.000 -35.161
Traceless
 xyz
x -1.835 -1.428 0.000
y -1.428 4.338 0.000
z 0.000 0.000 -2.502
Polar
3z2-r2-5.005
x2-y2-4.116
xy-1.428
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.838 -1.168 0.000
y -1.168 9.942 0.000
z 0.000 0.000 3.290


<r2> (average value of r2) Å2
<r2> 112.477
(<r2>)1/2 10.606