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

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-6968.486969
Energy at 298.15K 
HF Energy-6968.414221
Nuclear repulsion energy210.602788
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 B2PLYP/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' 3153 3153 20.30 65.21 0.11 0.20
2 A' 3138 3138 0.72 113.40 0.49 0.66
3 A' 3074 3074 15.69 158.13 0.11 0.20
4 A' 1586 1586 3.48 18.79 0.72 0.84
5 A' 1554 1554 5.57 17.24 0.75 0.86
6 A' 1488 1488 5.96 7.83 0.62 0.77
7 A' 1304 1304 87.17 11.28 0.45 0.62
8 A' 1086 1086 2.61 7.59 0.68 0.81
9 A' 984 984 14.16 6.81 0.74 0.85
10 A' 507 507 8.73 31.72 0.38 0.55
11 A' 261 261 1.42 5.14 0.49 0.66
12 A" 3215 3215 7.37 40.17 0.75 0.86
13 A" 3165 3165 8.56 69.06 0.75 0.86
14 A" 1576 1576 9.59 25.05 0.75 0.86
15 A" 1321 1321 0.57 7.24 0.75 0.86
16 A" 1048 1048 0.02 10.40 0.75 0.86
17 A" 779 779 8.60 2.14 0.75 0.86
18 A" 259 259 0.00 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14749.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14749.1 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 B2PLYP/3-21G
ABC
0.96363 0.09447 0.08893

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.617 -1.480 0.000
C2 -0.588 -2.426 0.000
I3 0.000 0.654 0.000
H4 1.231 -1.599 0.890
H5 1.231 -1.599 -0.890
H6 -0.229 -3.461 0.000
H7 -1.206 -2.272 0.886
H8 -1.206 -2.272 -0.886

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.53142.22161.08781.08782.15412.17682.1768
C21.53143.13472.18752.18751.09591.09171.0917
I32.22163.13472.71692.71694.12123.28673.2867
H41.08782.18752.71691.78012.52882.52913.0906
H51.08782.18752.71691.78012.52883.09062.5291
H62.15411.09594.12122.52882.52881.77581.7758
H72.17681.09173.28672.52913.09061.77581.7727
H82.17681.09173.28673.09062.52911.77581.7727

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 109.020 C1 C2 H7 111.059
C1 C2 H8 111.059 C2 C1 I3 111.972
C2 C1 H4 112.156 C2 C1 H5 112.156
I3 C1 H4 105.147 I3 C1 H5 105.147
H4 C1 H5 109.815 H6 C2 H7 108.532
H6 C2 H8 108.532 H7 C2 H8 108.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.634      
2 C -0.555      
3 I 0.078      
4 H 0.243      
5 H 0.243      
6 H 0.204      
7 H 0.211      
8 H 0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.399 -2.017 0.000 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.565 -1.150 0.000
y -1.150 -38.883 0.030
z 0.000 0.030 -42.945
Traceless
 xyz
x -1.651 -1.150 0.000
y -1.150 3.872 0.030
z 0.000 0.030 -2.221
Polar
3z2-r2-4.443
x2-y2-3.682
xy-1.150
xz0.000
yz0.030


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.182 -0.652 0.000
y -0.652 8.773 -0.001
z 0.000 -0.001 3.867


<r2> (average value of r2) Å2
<r2> 137.920
(<r2>)1/2 11.744