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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-6970.159527
Energy at 298.15K 
HF Energy-6970.159527
Nuclear repulsion energy213.794870
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 B1B95/3-21G
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 3016 13.46 71.03 0.42 0.59
2 A' 3137 3001 0.48 101.10 0.28 0.43
3 A' 3072 2939 15.82 169.74 0.12 0.22
4 A' 1563 1496 4.26 17.74 0.71 0.83
5 A' 1529 1463 5.07 12.76 0.75 0.86
6 A' 1467 1404 11.33 7.83 0.61 0.76
7 A' 1285 1229 65.70 8.80 0.31 0.47
8 A' 1081 1034 3.18 4.81 0.63 0.77
9 A' 993 950 14.68 5.01 0.70 0.82
10 A' 537 514 6.16 28.65 0.27 0.42
11 A' 255 244 1.20 2.98 0.37 0.54
12 A" 3211 3072 3.29 30.58 0.75 0.86
13 A" 3170 3033 5.62 68.51 0.75 0.86
14 A" 1553 1485 14.43 24.59 0.75 0.86
15 A" 1301 1244 0.57 5.12 0.75 0.86
16 A" 1036 991 0.01 5.73 0.75 0.86
17 A" 771 738 9.17 0.62 0.75 0.86
18 A" 261 250 0.00 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14687.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 14051.7 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 B1B95/3-21G
ABC
0.96275 0.09810 0.09212

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.619 -1.449 0.000
C2 -0.588 -2.380 0.000
I3 0.000 0.641 0.000
H4 1.233 -1.570 0.891
H5 1.233 -1.570 -0.891
H6 -0.244 -3.420 0.000
H7 -1.204 -2.219 0.886
H8 -1.204 -2.219 -0.886

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.52332.18011.08851.08852.15092.16762.1676
C21.52333.07752.18212.18211.09551.09111.0911
I32.18013.07752.68382.68384.06833.22683.2268
H41.08852.18212.68381.78112.52862.52153.0843
H51.08852.18212.68381.78112.52863.08432.5215
H62.15091.09554.06832.52862.52861.77471.7747
H72.16761.09113.22682.52153.08431.77471.7713
H82.16761.09113.22683.08432.52151.77471.7713

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 109.350 C1 C2 H7 110.931
C1 C2 H8 110.931 C2 C1 I3 111.160
C2 C1 H4 112.263 C2 C1 H5 112.263
I3 C1 H4 105.458 I3 C1 H5 105.458
H4 C1 H5 109.810 H6 C2 H7 108.518
H6 C2 H8 108.518 H7 C2 H8 108.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.579      
2 C -0.622      
3 I -0.005      
4 H 0.259      
5 H 0.259      
6 H 0.221      
7 H 0.233      
8 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.365 -1.951 0.000 1.985
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.911 -1.348 0.000
y -1.348 -37.849 0.000
z 0.000 0.000 -42.401
Traceless
 xyz
x -1.787 -1.348 0.000
y -1.348 4.308 0.000
z 0.000 0.000 -2.521
Polar
3z2-r2-5.042
x2-y2-4.063
xy-1.348
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.779 -0.292 0.000
y -0.292 9.301 0.000
z 0.000 0.000 5.549


<r2> (average value of r2) Å2
<r2> 133.793
(<r2>)1/2 11.567