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

using model chemistry: QCISD(T)=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-376.343781
Energy at 298.15K 
HF Energy-375.339525
Nuclear repulsion energy121.556415
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 QCISD(T)=FULL/Def2TZVPP
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' 3114 3114        
2 A' 3101 3101        
3 A' 3036 3036        
4 A' 1501 1501        
5 A' 1477 1477        
6 A' 1420 1420        
7 A' 1247 1247        
8 A' 1076 1076        
9 A' 980 980        
10 A' 530 530        
11 A' 261 261        
12 A" 3170 3170        
13 A" 3127 3127        
14 A" 1495 1495        
15 A" 1268 1268        
16 A" 999 999        
17 A" 743 743        
18 A" 261 261        

Unscaled Zero Point Vibrational Energy (zpe) 14402.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14402.9 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 QCISD(T)=FULL/Def2TZVPP
ABC
0.98125 0.10046 0.09434

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.610 -1.419 0.000
C2 -0.581 -2.359 0.000
I3 0.000 0.633 0.000
H4 1.227 -1.533 0.885
H5 1.227 -1.533 -0.885
H6 -0.230 -3.393 0.000
H7 -1.200 -2.206 0.882
H8 -1.200 -2.206 -0.882

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51692.14051.08451.08452.14522.16162.1616
C21.51693.04742.17502.17501.09181.08831.0883
I32.14053.04742.64182.64184.03223.20543.2054
H41.08452.17502.64181.76962.52252.51823.0760
H51.08452.17502.64181.76962.52253.07602.5182
H62.14521.09184.03222.52252.52251.76841.7684
H72.16161.08833.20542.51823.07601.76841.7632
H82.16161.08833.20543.07602.51821.76841.7632

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 109.555 C1 C2 H7 111.079
C1 C2 H8 111.079 C2 C1 I3 111.729
C2 C1 H4 112.398 C2 C1 H5 112.398
I3 C1 H4 105.251 I3 C1 H5 105.251
H4 C1 H5 109.337 H6 C2 H7 108.419
H6 C2 H8 108.419 H7 C2 H8 108.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability