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

using model chemistry: CCSD(T)/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 CCSD(T)/Def2TZVPP
 hartrees
Energy at 0K-376.217279
Energy at 298.15K 
HF Energy-375.339463
Nuclear repulsion energy121.239162
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(T)/Def2TZVPP
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' 3116 3116        
2 A' 3103 3103        
3 A' 3038 3038        
4 A' 1501 1501        
5 A' 1478 1478        
6 A' 1417 1417        
7 A' 1246 1246        
8 A' 1073 1073        
9 A' 977 977        
10 A' 527 527        
11 A' 260 260        
12 A" 3173 3173        
13 A" 3129 3129        
14 A" 1493 1493        
15 A" 1264 1264        
16 A" 998 998        
17 A" 744 744        
18 A" 259 259        

Unscaled Zero Point Vibrational Energy (zpe) 14396.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14396.7 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(T)/Def2TZVPP
ABC
0.97779 0.09987 0.09380

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.611 -1.424 0.000
C2 -0.582 -2.365 0.000
I3 0.000 0.635 0.000
H4 1.228 -1.539 0.887
H5 1.228 -1.539 -0.887
H6 -0.229 -3.401 0.000
H7 -1.202 -2.212 0.883
H8 -1.202 -2.212 -0.883

Atom - Atom Distances (Å)
  C1 C2 I3 H4 H5 H6 H7 H8
C11.51912.14791.08661.08662.14722.16502.1650
C21.51913.05582.17852.17851.09371.09031.0903
I32.14793.05582.64942.64944.04183.21383.2138
H41.08662.17852.64941.77362.52532.52193.0812
H51.08662.17852.64941.77362.52533.08122.5219
H62.14721.09374.04182.52532.52531.77211.7721
H72.16501.09033.21382.52193.08121.77211.7670
H82.16501.09033.21383.08122.52191.77211.7670

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 109.456 C1 C2 H7 111.070
C1 C2 H8 111.070 C2 C1 I3 111.741
C2 C1 H4 112.397 C2 C1 H5 112.397
I3 C1 H4 105.214 I3 C1 H5 105.214
H4 C1 H5 109.399 H6 C2 H7 108.459
H6 C2 H8 108.459 H7 C2 H8 108.248
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability