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

using model chemistry: MP2=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-6928.538296
Energy at 298.15K 
HF Energy-6928.417536
Nuclear repulsion energy212.963406
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 MP2=FULL/STO-3G
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' 3551 3156 0.88 38.32 0.71 0.83
2 A' 3402 3024 2.33 35.14 0.15 0.26
3 A' 3375 3000 2.13 43.58 0.03 0.05
4 A' 1731 1538 0.46 7.23 0.74 0.85
5 A' 1700 1512 2.22 20.76 0.75 0.86
6 A' 1614 1435 1.55 6.59 0.64 0.78
7 A' 1445 1284 62.06 1.42 0.24 0.39
8 A' 1182 1051 1.60 5.17 0.60 0.75
9 A' 1098 976 4.06 4.97 0.74 0.85
10 A' 632 562 4.81 18.20 0.33 0.49
11 A' 286 254 0.89 2.87 0.51 0.68
12 A" 3562 3166 1.85 16.01 0.75 0.86
13 A" 3518 3127 1.39 35.56 0.75 0.86
14 A" 1725 1533 1.67 17.55 0.75 0.86
15 A" 1422 1264 0.00 11.77 0.75 0.86
16 A" 1145 1018 1.21 5.27 0.75 0.86
17 A" 823 732 1.60 0.76 0.75 0.86
18 A" 251 223 0.11 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16229.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 14426.4 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 MP2=FULL/STO-3G
ABC
0.96810 0.09656 0.09085

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.610 -1.416 0.000
C2 -0.585 -2.419 0.000
I3 0.000 0.645 0.000
H4 1.241 -1.585 0.893
H5 1.241 -1.585 -0.893
H6 -0.199 -3.454 0.000
H7 -1.216 -2.283 0.895
H8 -1.216 -2.283 -0.895

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.56022.14981.10651.10652.19252.21072.2107
C21.56023.11972.19762.19761.10451.10331.1033
I32.14983.11972.70402.70404.10413.29493.2949
H41.10652.19762.70401.78562.52312.55493.1182
H51.10652.19762.70401.78562.52313.11822.5549
H62.19251.10454.10412.52312.52311.79031.7903
H72.21071.10333.29492.55493.11821.79031.7896
H82.21071.10333.29493.11822.55491.79031.7896

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 109.549 C1 C2 H7 111.041
C1 C2 H8 111.041 C2 C1 I3 113.520
C2 C1 H4 109.829 C2 C1 H5 109.829
I3 C1 H4 107.942 I3 C1 H5 107.942
H4 C1 H5 107.586 H6 C2 H7 108.368
H6 C2 H8 108.368 H7 C2 H8 108.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability