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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-6969.298954
Energy at 298.15K 
HF Energy-6969.298954
Nuclear repulsion energy207.847266
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 BLYP/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' 3051 3034 20.44 70.49 0.05 0.10
2 A' 3031 3014 3.34 109.77 0.47 0.64
3 A' 2963 2947 17.23 215.90 0.17 0.29
4 A' 1531 1522 3.37 19.08 0.71 0.83
5 A' 1498 1490 3.24 17.15 0.75 0.86
6 A' 1428 1420 5.08 11.80 0.58 0.73
7 A' 1237 1230 91.91 11.07 0.48 0.64
8 A' 1040 1034 1.63 9.17 0.72 0.84
9 A' 943 938 21.16 7.58 0.66 0.79
10 A' 471 469 10.09 28.39 0.37 0.54
11 A' 247 246 2.21 5.89 0.49 0.65
12 A" 3113 3096 11.05 38.50 0.75 0.86
13 A" 3059 3043 9.38 72.86 0.75 0.86
14 A" 1516 1508 9.02 25.19 0.75 0.86
15 A" 1265 1258 0.73 6.44 0.75 0.86
16 A" 996 991 0.05 11.19 0.75 0.86
17 A" 749 745 8.68 2.44 0.75 0.86
18 A" 250 249 0.01 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14193.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 14115.4 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 BLYP/3-21G
ABC
0.94826 0.09188 0.08655

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.622 -1.511 0.000
C2 -0.592 -2.455 0.000
I3 0.000 0.663 0.000
H4 1.240 -1.618 0.899
H5 1.240 -1.618 -0.899
H6 -0.230 -3.501 0.000
H7 -1.215 -2.303 0.894
H8 -1.215 -2.303 -0.894

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.53812.26131.09631.09632.16452.19122.1912
C21.53813.17412.20612.20611.10641.10051.1005
I32.26133.17412.74722.74724.17013.32753.3275
H41.09632.20612.74721.79882.55262.54863.1166
H51.09632.20612.74721.79882.55263.11662.5486
H62.16451.10644.17012.55262.55261.79021.7902
H72.19121.10053.32752.54863.11661.79021.7887
H82.19121.10053.32753.11662.54861.79021.7887

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 108.772 C1 C2 H7 111.202
C1 C2 H8 111.202 C2 C1 I3 111.908
C2 C1 H4 112.655 C2 C1 H5 112.655
I3 C1 H4 104.385 I3 C1 H5 104.385
H4 C1 H5 110.242 H6 C2 H7 108.431
H6 C2 H8 108.431 H7 C2 H8 108.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.580      
2 C -0.523      
3 I 0.046      
4 H 0.231      
5 H 0.231      
6 H 0.193      
7 H 0.202      
8 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.394 -2.105 0.000 2.142
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.237 -1.117 0.000
y -1.117 -38.252 0.000
z 0.000 0.000 -42.664
Traceless
 xyz
x -1.779 -1.117 0.000
y -1.117 4.198 0.000
z 0.000 0.000 -2.420
Polar
3z2-r2-4.839
x2-y2-3.985
xy-1.117
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.322 -0.562 0.000
y -0.562 9.209 0.000
z 0.000 0.000 3.974


<r2> (average value of r2) Å2
<r2> 140.626
(<r2>)1/2 11.859