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

using model chemistry: CCSD/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 CCSD/cc-pVTZ-PP
 hartrees
Energy at 0K-373.937324
Energy at 298.15K 
HF Energy-373.339749
Nuclear repulsion energy121.247314
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 CCSD/cc-pVTZ-PP
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' 3134 2990 22.84      
2 A' 3121 2978 0.15      
3 A' 3056 2915 22.15      
4 A' 1517 1447 1.27      
5 A' 1499 1430 1.13      
6 A' 1432 1366 3.68      
7 A' 1271 1212 68.85      
8 A' 1088 1038 0.12      
9 A' 991 945 7.52      
10 A' 539 515 4.65      
11 A' 263 251 0.49      
12 A" 3190 3043 5.27      
13 A" 3146 3001 8.83      
14 A" 1509 1439 9.24      
15 A" 1280 1221 0.22      
16 A" 1015 968 0.36      
17 A" 757 722 3.83      
18 A" 264 252 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14534.6 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 13866.0 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 CCSD/cc-pVTZ-PP
ABC
0.98181 0.09973 0.09370

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.609 -1.425 0.000
C2 -0.580 -2.366 0.000
I3 0.000 0.635 0.000
H4 1.227 -1.542 0.884
H5 1.227 -1.542 -0.884
H6 -0.228 -3.400 0.000
H7 -1.201 -2.217 0.882
H8 -1.201 -2.217 -0.882

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51672.14891.08501.08502.14502.16342.1634
C21.51673.05732.17432.17431.09221.08881.0888
I32.14893.05732.65132.65134.04213.21753.2175
H41.08502.17432.65131.76842.52032.52013.0772
H51.08502.17432.65131.76842.52033.07722.5201
H62.14501.09224.04212.52032.52031.76801.7680
H72.16341.08883.21752.52013.07721.76801.7635
H82.16341.08883.21753.07722.52011.76801.7635

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 109.540 C1 C2 H7 111.205
C1 C2 H8 111.205 C2 C1 I3 111.880
C2 C1 H4 112.323 C2 C1 H5 112.323
I3 C1 H4 105.348 I3 C1 H5 105.348
H4 C1 H5 109.157 H6 C2 H7 108.315
H6 C2 H8 108.315 H7 C2 H8 108.167
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability