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

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-6966.282619
Energy at 298.15K 
HF Energy-6966.056387
Nuclear repulsion energy210.953331
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 CID/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3169 2952 21.29      
2 A' 3153 2937 2.61      
3 A' 3091 2880 16.18      
4 A' 1602 1492 3.09      
5 A' 1574 1466 6.20      
6 A' 1513 1409 5.42      
7 A' 1341 1249 78.01      
8 A' 1101 1026 3.01      
9 A' 994 926 9.00      
10 A' 528 492 6.30      
11 A' 267 248 0.85      
12 A" 3227 3006 8.21      
13 A" 3174 2957 10.14      
14 A" 1595 1486 8.55      
15 A" 1345 1253 0.39      
16 A" 1070 997 0.00      
17 A" 787 733 7.72      
18 A" 261 243 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14894.7 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 13875.9 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 CID/3-21G
ABC
0.96566 0.09473 0.08917

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.616 -1.469 0.000
C2 -0.587 -2.427 0.000
I3 0.000 0.653 0.000
H4 1.232 -1.598 0.889
H5 1.232 -1.598 -0.889
H6 -0.223 -3.461 0.000
H7 -1.207 -2.275 0.887
H8 -1.207 -2.275 -0.887

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.53752.20951.08861.08862.16132.18212.1821
C21.53753.13462.18742.18741.09641.09291.0929
I32.20953.13462.71472.71474.11963.28903.2890
H41.08862.18742.71471.77742.52572.53143.0921
H51.08862.18742.71471.77742.52573.09212.5314
H62.16131.09644.11962.52572.52571.77781.7778
H72.18211.09293.28902.53143.09211.77781.7739
H82.18211.09293.28903.09212.53141.77781.7739

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 109.136 C1 C2 H7 110.979
C1 C2 H8 110.979 C2 C1 I3 112.315
C2 C1 H4 111.662 C2 C1 H5 111.662
I3 C1 H4 105.707 I3 C1 H5 105.707
H4 C1 H5 109.448 H6 C2 H7 108.589
H6 C2 H8 108.589 H7 C2 H8 108.505
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability