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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-6966.308961
Energy at 298.15K 
HF Energy-6966.055687
Nuclear repulsion energy209.575100
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 MP4/3-21G
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' 3104 3010        
2 A' 3091 2997        
3 A' 3030 2938        
4 A' 1577 1529        
5 A' 1544 1497        
6 A' 1481 1436        
7 A' 1305 1265        
8 A' 1073 1041        
9 A' 964 935        
10 A' 502 487        
11 A' 257 250        
12 A" 3161 3065        
13 A" 3115 3021        
14 A" 1569 1521        
15 A" 1316 1277        
16 A" 1042 1011        
17 A" 767 744        
18 A" 257 249        

Unscaled Zero Point Vibrational Energy (zpe) 14577.6 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 14137.4 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 MP4/3-21G
ABC
0.95301 0.09352 0.08802

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.621 -1.482 0.000
C2 -0.591 -2.441 0.000
I3 0.000 0.657 0.000
H4 1.238 -1.609 0.895
H5 1.238 -1.609 -0.895
H6 -0.228 -3.480 0.000
H7 -1.213 -2.286 0.891
H8 -1.213 -2.286 -0.891

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.54562.22761.09411.09412.17062.19172.1917
C21.54563.15372.20002.20001.10111.09761.0976
I32.22763.15372.73242.73244.14333.30533.3053
H41.09412.20002.73241.78902.53992.54303.1074
H51.09412.20002.73241.78902.53993.10742.5430
H62.17061.10114.14332.53992.53991.78661.7866
H72.19171.09763.30532.54303.10741.78661.7826
H82.19171.09763.30533.10742.54301.78661.7826

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 109.038 C1 C2 H7 110.894
C1 C2 H8 110.894 C2 C1 I3 112.141
C2 C1 H4 111.772 C2 C1 H5 111.772
I3 C1 H4 105.552 I3 C1 H5 105.552
H4 C1 H5 109.693 H6 C2 H7 108.689
H6 C2 H8 108.689 H7 C2 H8 108.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability