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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-6969.364831
Energy at 298.15K 
HF Energy-6969.364831
Nuclear repulsion energy210.152784
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/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' 3130 3020 18.27 71.35 0.06 0.12
2 A' 3111 3002 2.43 110.17 0.51 0.68
3 A' 3045 2938 15.96 185.51 0.14 0.25
4 A' 1566 1511 3.88 18.84 0.72 0.84
5 A' 1534 1480 5.24 16.71 0.75 0.86
6 A' 1468 1417 6.67 9.32 0.60 0.75
7 A' 1281 1236 89.25 12.43 0.46 0.63
8 A' 1075 1037 2.26 8.16 0.70 0.83
9 A' 977 943 18.87 7.01 0.70 0.83
10 A' 497 480 10.22 31.80 0.37 0.54
11 A' 258 249 1.87 5.46 0.49 0.66
12 A" 3193 3081 7.54 40.63 0.75 0.86
13 A" 3139 3028 8.59 70.84 0.75 0.86
14 A" 1554 1499 10.41 25.01 0.75 0.86
15 A" 1302 1256 0.71 6.66 0.75 0.86
16 A" 1032 996 0.06 10.72 0.75 0.86
17 A" 772 744 9.22 2.20 0.75 0.86
18 A" 256 247 0.00 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14593.8 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 14081.5 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/3-21G
ABC
0.96212 0.09406 0.08856

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.617 -1.488 0.000
C2 -0.588 -2.429 0.000
I3 0.000 0.655 0.000
H4 1.232 -1.600 0.892
H5 1.232 -1.600 -0.892
H6 -0.230 -3.467 0.000
H7 -1.207 -2.277 0.888
H8 -1.207 -2.277 -0.888

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52862.23031.08931.08932.15262.17702.1770
C21.52863.13922.18942.18941.09841.09341.0934
I32.23033.13922.72072.72074.12853.29253.2925
H41.08932.18942.72071.78422.53312.53143.0946
H51.08932.18942.72071.78422.53313.09462.5314
H62.15261.09844.12852.53312.53311.77801.7780
H72.17701.09343.29252.53143.09461.77801.7760
H82.17701.09343.29253.09462.53141.77801.7760

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 108.946 C1 C2 H7 111.172
C1 C2 H8 111.172 C2 C1 I3 111.899
C2 C1 H4 112.422 C2 C1 H5 112.422
I3 C1 H4 104.800 I3 C1 H5 104.800
H4 C1 H5 109.971 H6 C2 H7 108.428
H6 C2 H8 108.428 H7 C2 H8 108.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.632      
2 C -0.559      
3 I 0.066      
4 H 0.246      
5 H 0.246      
6 H 0.206      
7 H 0.214      
8 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.409 -2.105 0.000 2.145
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.212 -1.133 0.000
y -1.133 -38.417 0.000
z 0.000 0.000 -42.624
Traceless
 xyz
x -1.692 -1.133 0.000
y -1.133 4.001 0.000
z 0.000 0.000 -2.309
Polar
3z2-r2-4.618
x2-y2-3.795
xy-1.133
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.239 -0.609 0.000
y -0.609 8.938 0.000
z 0.000 0.000 3.910


<r2> (average value of r2) Å2
<r2> 138.122
(<r2>)1/2 11.753