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

using model chemistry: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-25.732271
Energy at 298.15K 
HF Energy-25.732271
Nuclear repulsion energy39.447118
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 B3LYP/CEP-31G
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' 3121 3023 57.88 89.41 0.35 0.52
2 A' 3108 3009 2.91 168.13 0.21 0.34
3 A' 3032 2936 42.78 244.95 0.10 0.18
4 A' 1511 1463 6.02 16.24 0.73 0.85
5 A' 1485 1438 2.65 21.24 0.64 0.78
6 A' 1429 1384 7.29 6.81 0.67 0.80
7 A' 1256 1216 94.79 15.66 0.42 0.59
8 A' 1070 1037 0.49 11.91 0.61 0.76
9 A' 982 951 24.75 7.60 0.73 0.84
10 A' 472 457 16.99 37.82 0.35 0.52
11 A' 248 240 2.56 7.92 0.57 0.72
12 A" 3196 3095 34.74 43.35 0.75 0.86
13 A" 3146 3047 24.13 85.81 0.75 0.86
14 A" 1494 1447 13.35 22.38 0.75 0.86
15 A" 1253 1213 1.86 10.55 0.75 0.86
16 A" 1000 968 0.56 13.01 0.75 0.86
17 A" 763 738 15.05 6.14 0.75 0.86
18 A" 245 237 0.06 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14404.2 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 13949.0 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 B3LYP/CEP-31G
ABC
0.94563 0.09369 0.08814

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.623 -1.484 0.000
C2 -0.593 -2.438 0.000
I3 0.000 0.656 0.000
H4 1.244 -1.583 0.901
H5 1.244 -1.583 -0.901
H6 -0.228 -3.484 0.000
H7 -1.220 -2.291 0.894
H8 -1.220 -2.291 -0.894

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.54502.22881.09851.09852.17332.20162.2016
C21.54503.14972.21722.21721.10791.10211.1021
I32.22883.14972.71472.71474.14593.31203.3120
H41.09852.21722.71471.80152.56782.56383.1296
H51.09852.21722.71471.80152.56783.12962.5638
H62.17331.10794.14592.56782.56781.79081.7908
H72.20161.10213.31202.56383.12961.79081.7882
H82.20161.10213.31203.12962.56381.79081.7882

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 108.899 C1 C2 H7 111.444
C1 C2 H8 111.444 C2 C1 I3 111.873
C2 C1 H4 112.923 C2 C1 H5 112.923
I3 C1 H4 104.131 I3 C1 H5 104.131
H4 C1 H5 110.165 H6 C2 H7 108.257
H6 C2 H8 108.257 H7 C2 H8 108.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.585      
2 C -0.328      
3 I 0.011      
4 H 0.208      
5 H 0.208      
6 H 0.151      
7 H 0.167      
8 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.444 -2.396 0.000 2.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.123 -1.428 0.000
y -1.428 -29.693 0.000
z 0.000 0.000 -34.467
Traceless
 xyz
x -2.043 -1.428 0.000
y -1.428 4.602 0.000
z 0.000 0.000 -2.559
Polar
3z2-r2-5.117
x2-y2-4.430
xy-1.428
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.190 -0.779 0.000
y -0.779 9.841 0.000
z 0.000 0.000 3.403


<r2> (average value of r2) Å2
<r2> 95.995
(<r2>)1/2 9.798