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

using model chemistry: B3PW91/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-377.077906
Energy at 298.15K 
HF Energy-377.077906
Nuclear repulsion energy120.931775
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/Def2TZVPP
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' 3113 3113 17.49 86.22 0.21 0.35
2 A' 3099 3099 0.10 120.97 0.32 0.48
3 A' 3032 3032 21.49 247.68 0.10 0.18
4 A' 1491 1491 2.16 6.62 0.74 0.85
5 A' 1474 1474 1.49 5.76 0.73 0.84
6 A' 1406 1406 5.07 2.87 0.67 0.80
7 A' 1234 1234 72.12 15.98 0.35 0.51
8 A' 1072 1072 0.13 3.79 0.50 0.67
9 A' 973 973 14.81 4.13 0.58 0.73
10 A' 513 513 6.80 27.46 0.24 0.39
11 A' 255 255 1.09 3.53 0.34 0.51
12 A" 3172 3172 4.11 33.64 0.75 0.86
13 A" 3129 3129 7.58 67.18 0.75 0.86
14 A" 1478 1478 11.23 7.86 0.75 0.86
15 A" 1256 1256 0.39 0.86 0.75 0.86
16 A" 994 994 0.19 2.18 0.75 0.86
17 A" 746 746 5.46 0.06 0.75 0.86
18 A" 254 254 0.00 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14345.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14345.1 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/Def2TZVPP
ABC
0.99089 0.09874 0.09292

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.603 -1.436 0.000
C2 -0.576 -2.377 0.000
I3 0.000 0.639 0.000
H4 1.224 -1.539 0.886
H5 1.224 -1.539 -0.886
H6 -0.213 -3.410 0.000
H7 -1.200 -2.239 0.883
H8 -1.200 -2.239 -0.883

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.50892.16021.08661.08662.13642.16232.1623
C21.50893.07012.17422.17421.09461.09001.0900
I32.16023.07012.65012.65014.05413.23993.2399
H41.08662.17422.65011.77242.52032.52253.0811
H51.08662.17422.65011.77242.52033.08112.5225
H62.13641.09464.05412.52032.52031.76781.7678
H72.16231.09003.23992.52253.08111.76781.7659
H82.16231.09003.23993.08112.52251.76781.7659

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 109.252 C1 C2 H7 111.593
C1 C2 H8 111.593 C2 C1 I3 112.381
C2 C1 H4 112.773 C2 C1 H5 112.773
I3 C1 H4 104.501 I3 C1 H5 104.501
H4 C1 H5 109.283 H6 C2 H7 108.033
H6 C2 H8 108.033 H7 C2 H8 108.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.225      
2 C -0.240      
3 I -0.112      
4 H 0.144      
5 H 0.144      
6 H 0.090      
7 H 0.099      
8 H 0.099      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.376 -2.026 0.000 2.061
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.702 -1.274 0.000
y -1.274 -36.765 0.000
z 0.000 0.000 -41.006
Traceless
 xyz
x -1.816 -1.274 0.000
y -1.274 4.088 0.000
z 0.000 0.000 -2.272
Polar
3z2-r2-4.544
x2-y2-3.937
xy-1.274
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.161 -0.181 0.000
y -0.181 11.106 0.000
z 0.000 0.000 6.730


<r2> (average value of r2) Å2
<r2> 120.739
(<r2>)1/2 10.988