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

using model chemistry: PBE1PBE/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/cc-pVTZ-PP
 hartrees
Energy at 0K-374.876717
Energy at 298.15K 
HF Energy-374.876717
Nuclear repulsion energy121.109720
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 PBE1PBE/cc-pVTZ-PP
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' 3122 3122 16.90 83.95 0.23 0.38
2 A' 3108 3108 0.07 117.07 0.33 0.49
3 A' 3041 3041 20.44 233.64 0.10 0.18
4 A' 1491 1491 2.10 6.80 0.74 0.85
5 A' 1475 1475 1.59 5.35 0.73 0.84
6 A' 1406 1406 6.01 2.94 0.63 0.78
7 A' 1237 1237 70.35 13.75 0.34 0.51
8 A' 1081 1081 0.17 3.54 0.54 0.70
9 A' 977 977 14.27 4.06 0.58 0.74
10 A' 524 524 6.34 27.56 0.22 0.37
11 A' 257 257 1.05 3.68 0.30 0.47
12 A" 3181 3181 3.67 33.02 0.75 0.86
13 A" 3138 3138 7.31 67.31 0.75 0.86
14 A" 1477 1477 11.77 8.28 0.75 0.86
15 A" 1258 1258 0.32 0.75 0.75 0.86
16 A" 996 996 0.10 2.50 0.75 0.86
17 A" 747 747 5.35 0.06 0.75 0.86
18 A" 256 256 0.00 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14386.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14386.0 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 PBE1PBE/cc-pVTZ-PP
ABC
0.98973 0.09920 0.09332

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.604 -1.434 0.000
C2 -0.576 -2.371 0.000
I3 0.000 0.637 0.000
H4 1.224 -1.538 0.887
H5 1.224 -1.538 -0.887
H6 -0.217 -3.405 0.000
H7 -1.199 -2.229 0.883
H8 -1.199 -2.229 -0.883

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.50692.15701.08691.08692.13542.15972.1597
C21.50693.06242.17272.17271.09471.09021.0902
I32.15703.06242.64862.64864.04773.22963.2296
H41.08692.17272.64861.77312.51972.52013.0794
H51.08692.17272.64861.77312.51973.07942.5201
H62.13541.09474.04772.51972.51971.76871.7687
H72.15971.09023.22962.52013.07941.76871.7661
H82.15971.09023.22963.07942.52011.76871.7661

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 109.306 C1 C2 H7 111.518
C1 C2 H8 111.518 C2 C1 I3 112.184
C2 C1 H4 112.781 C2 C1 H5 112.781
I3 C1 H4 104.586 I3 C1 H5 104.586
H4 C1 H5 109.305 H6 C2 H7 108.095
H6 C2 H8 108.095 H7 C2 H8 108.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233      
2 C -0.299      
3 I -0.082      
4 H 0.132      
5 H 0.132      
6 H 0.108      
7 H 0.121      
8 H 0.121      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.388 -2.014 0.000 2.051
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.890 -1.281 0.000
y -1.281 -37.013 0.000
z 0.000 0.000 -41.190
Traceless
 xyz
x -1.789 -1.281 0.000
y -1.281 4.027 0.000
z 0.000 0.000 -2.239
Polar
3z2-r2-4.477
x2-y2-3.877
xy-1.281
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.110 -0.129 0.000
y -0.129 10.785 0.000
z 0.000 0.000 6.731


<r2> (average value of r2) Å2
<r2> 120.482
(<r2>)1/2 10.976