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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-6968.635807
Energy at 298.15K 
HF Energy-6968.635807
Nuclear repulsion energy210.174632
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 PBEPBEultrafine/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' 3059 3031 18.28 65.64 0.26 0.41
2 A' 3044 3016 0.10 122.47 0.34 0.50
3 A' 2976 2949 14.42 199.67 0.13 0.23
4 A' 1518 1505 4.60 19.61 0.72 0.84
5 A' 1485 1471 5.27 15.78 0.75 0.86
6 A' 1417 1404 9.13 11.17 0.60 0.75
7 A' 1238 1227 76.94 10.66 0.50 0.67
8 A' 1048 1039 1.18 9.24 0.73 0.85
9 A' 966 957 24.09 7.12 0.61 0.76
10 A' 494 489 8.20 26.89 0.37 0.54
11 A' 253 251 1.98 4.94 0.51 0.67
12 A" 3121 3093 7.85 32.48 0.75 0.86
13 A" 3076 3048 6.23 77.84 0.75 0.86
14 A" 1505 1491 11.86 24.48 0.75 0.86
15 A" 1262 1251 0.90 6.22 0.75 0.86
16 A" 1001 992 0.14 11.19 0.75 0.86
17 A" 751 744 10.54 2.15 0.75 0.86
18 A" 257 254 0.01 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14235.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 14105.5 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 PBEPBEultrafine/3-21G
ABC
0.95167 0.09440 0.08882

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.620 -1.486 0.000
C2 -0.590 -2.423 0.000
I3 0.000 0.654 0.000
H4 1.240 -1.600 0.900
H5 1.240 -1.600 -0.900
H6 -0.232 -3.471 0.000
H7 -1.214 -2.267 0.895
H8 -1.214 -2.267 -0.895

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.53002.22751.09921.09922.16012.18472.1847
C21.53003.13242.19902.19901.10741.10231.1023
I32.22753.13242.72552.72554.13103.28703.2870
H41.09922.19902.72551.80042.54512.54273.1127
H51.09922.19902.72551.80042.54513.11272.5427
H62.16011.10744.13102.54512.54511.79281.7928
H72.18471.10233.28702.54273.11271.79281.7906
H82.18471.10233.28703.11272.54271.79281.7906

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 108.922 C1 C2 H7 111.157
C1 C2 H8 111.157 C2 C1 I3 111.601
C2 C1 H4 112.487 C2 C1 H5 112.487
I3 C1 H4 104.889 I3 C1 H5 104.889
H4 C1 H5 109.962 H6 C2 H7 108.449
H6 C2 H8 108.449 H7 C2 H8 108.630
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.668      
2 C -0.601      
3 I 0.072      
4 H 0.260      
5 H 0.260      
6 H 0.221      
7 H 0.228      
8 H 0.228      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.398 -2.097 0.000 2.134
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.133 -1.126 0.000
y -1.126 -38.245 0.000
z 0.000 0.000 -42.568
Traceless
 xyz
x -1.727 -1.126 0.000
y -1.126 4.106 0.000
z 0.000 0.000 -2.379
Polar
3z2-r2-4.758
x2-y2-3.889
xy-1.126
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.343 -0.530 0.000
y -0.530 8.970 0.000
z 0.000 0.000 3.991


<r2> (average value of r2) Å2
<r2> 137.845
(<r2>)1/2 11.741