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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-6969.440275
Energy at 298.15K 
HF Energy-6969.440275
Nuclear repulsion energy211.498292
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 B3PW91/3-21G
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' 3134 3013 17.89      
2 A' 3119 2998 0.14      
3 A' 3051 2933 14.86      
4 A' 1558 1498 4.79      
5 A' 1526 1467 7.02      
6 A' 1462 1406 9.90      
7 A' 1283 1233 78.23      
8 A' 1079 1037 2.56      
9 A' 991 952 20.96      
10 A' 512 492 8.84      
11 A' 261 251 1.73      
12 A" 3198 3074 6.11      
13 A" 3150 3027 6.95      
14 A" 1548 1487 12.54      
15 A" 1300 1250 0.86      
16 A" 1036 996 0.13      
17 A" 773 743 10.97      
18 A" 260 249 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14620.2 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 14053.0 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 B3PW91/3-21G
ABC
0.96470 0.09551 0.08987

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.616 -1.473 0.000
C2 -0.586 -2.411 0.000
I3 0.000 0.650 0.000
H4 1.232 -1.590 0.893
H5 1.232 -1.590 -0.893
H6 -0.229 -3.450 0.000
H7 -1.206 -2.258 0.889
H8 -1.206 -2.258 -0.889

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52462.21041.09101.09102.15022.17422.1742
C21.52463.11642.18572.18571.09921.09441.0944
I32.21043.11642.70752.70754.10663.27173.2717
H41.09102.18572.70751.78542.52852.52863.0931
H51.09102.18572.70751.78542.52853.09312.5286
H62.15021.09924.10662.52852.52851.77921.7792
H72.17421.09443.27172.52863.09311.77921.7773
H82.17421.09443.27173.09312.52861.77921.7773

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 108.993 C1 C2 H7 111.176
C1 C2 H8 111.176 C2 C1 I3 111.788
C2 C1 H4 112.304 C2 C1 H5 112.304
I3 C1 H4 105.077 I3 C1 H5 105.077
H4 C1 H5 109.813 H6 C2 H7 108.412
H6 C2 H8 108.412 H7 C2 H8 108.591
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.699      
2 C -0.622      
3 I 0.081      
4 H 0.270      
5 H 0.270      
6 H 0.228      
7 H 0.236      
8 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.413 -2.126 0.000 2.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.063 -1.136 0.000
y -1.136 -38.292 0.000
z 0.000 0.000 -42.489
Traceless
 xyz
x -1.673 -1.136 0.000
y -1.136 3.984 0.000
z 0.000 0.000 -2.311
Polar
3z2-r2-4.623
x2-y2-3.772
xy-1.136
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.257 -0.588 0.000
y -0.588 8.796 0.000
z 0.000 0.000 3.925


<r2> (average value of r2) Å2
<r2> 136.522
(<r2>)1/2 11.684